{ "version": 1, "prompts": [ { "task_id": "set_missing_element-9223", "task_prompt": "Set_A: ['vu', 'ui', 'ags', 'xh', 'aff', 'mn', 'wn', 'nh', 'wd', 'acx', 'qg', 'lm', 'vj', 'aag', 'ob', 'adz', 'aef', 'mt', 'ns', 'ahy', 'yl', 'le', 'qj', 'zb', 'abp', 'zu', 'ain', 'xm', 'aej', 'ahw', 'yd', 'acz', 'aib', 'afi', 'or', 'uz', 'we', 'sy', 'zt', 'ado', 'wa', 'op', 'xx', 'wo', 'ny', 'mh', 'acg', 'agt', 'nz', 'ql', 'vw', 'vf', 'aik', 'aab', 'pi', 'yu', 'km', 'yv', 'aig', 'uk', 'abj', 'abn', 'nl', 'sr', 'pk', 'wj', 'aai', 'adi', 'rf', 'yi', 'aiz', 'vm', 'tk', 'qo', 'afn', 'ahs', 'sx', 'ry', 'afv', 'agl', 've', 'xg', 'adn', 'xw', 'kt', 'um', 'pv', 'qc', 'lv', 'lj', 'adh', 'tp', 'qh', 'tx', 'lx', 'aeg', 'aey', 'afe', 'ko', 'na', 'vx', 'agc', 'kk', 'xv', 'kz', 'me', 'afh', 'qy', 'lg', 'ri', 'tn', 'yo', 'pa', 'qs', 'aak', 'agn', 'aes', 'ru', 'uw', 'acs', 'qa', 'wh', 'tj', 'sq', 'zq', 'wy', 'aev', 'vk', 'pf', 'zp', 'ahq', 'adu', 'adx', 'abi', 'pt', 'agz', 'ky', 'rr', 'oa', 'aby', 'sa', 'kw', 'abu', 'rt', 'rn', 'sp', 'acj', 'aeo', 'adv', 'aho', 'ks', 'xy', 'np', 'ahg', 'aaf', 'sd', 'ws', 'adk', 'lq', 'yb', 'ts', 'zj', 'xo', 'afb', 'tt', 'ahe', 'adw', 'afl', 'ahn', 'yp', 'wb', 'nn', 'adl', 'ady', 'ta', 'vd', 'ahp', 'ln', 'pm', 'agw', 'se', 'sw', 'nf', 'mq', 'on', 'zw', 'to', 'qi', 'acf', 'aao', 'adr', 'zy', 'aie', 'nr', 'zz', 'ya', 'agv', 'qz', 'va', 'yw', 'mr', 'xr', 'age', 'afx', 'ads', 'vy', 'zk', 'ais', 'zg', 'acu', 'sz', 'zc', 'aii', 'aer', 'zv', 'po', 'acq', 'ti', 'yy', 'ait', 'afd', 'afm', 'yt', 'xs', 'pn', 'st', 'abz', 'lw', 'nw', 'ahm', 'rz', 'rs', 'mv', 'no', 'agm', 'aic', 'wu', 'adt', 'aco', 'xi', 'zr', 'aid', 'oi', 'qn', 'tr', 'aay', 'aas', 'abl', 'ahh', 'ot', 'vs', 'si', 'wz', 'lr', 'ahd', 'lp', 'xb', 'ps', 'uv', 'aip', 'kq', 'agk', 'abm', 'aam', 'mm', 'os', 'acr', 'agx', 'aed', 'acd', 'sl', 'pb', 'vt', 'agb', 'aio', 'aee', 'uy', 'td', 'aba', 'pu', 'tb', 'afk', 'ol', 'aht', 'aax', 'tg', 'rj', 'lf', 'oz', 'uo', 'xt', 'pq', 'vr', 'adm', 'zi', 'tz', 'aat', 'abf', 'vb', 'nv', 'pg', 'abh', 'abc', 'mj', 'ul', 'agg', 'ut', 'afs', 'pl', 'agy', 'ade', 'zh', 'wm', 'sc', 'vv', 'vp', 'qp', 'lt', 'yh', 'zo', 'rv', 'nk', 'afc', 'adq', 'kn', 'py', 'tf', 'xf', 'ahv', 'll', 'aet', 'sh', 'afz', 'adf', 'agr', 'aar', 'lc', 'oe', 'aiw', 'zl', 'ra', 'sb', 'ahk', 'afp', 'mx', 'wf', 'yk', 'oc', 'agf', 'aaj', 'aiu', 'ml', 'om', 'sj', 'ye', 'vc', 'nd', 'un', 'ada', 'agq', 'rx', 'aiq', 'vo', 'qt', 'ld', 'oj', 'aca', 'zx', 'my', 'ahz', 'us', 'aei', 'ach', 'aaz', 'qv', 'tm', 'xz', 'aau', 'aen', 'pc', 'ub', 'adg', 'xp', 'tl', 'aem', 'vg', 'aaa', 'kr', 'od', 'ox', 'ro', 'oh', 'abv', 'uq', 'ph', 'nq', 'aif', 'agj', 'yq', 'tq', 'pz', 'aia', 'wq', 'vq', 'agh', 'of', 'afr', 'zm', 'up', 'ail', 'nb', 'kp', 'aae', 'agd', 'rp', 'ael', 'ss', 'qr', 'abr', 'oy', 'og', 'rc', 'ack', 'sn', 'abq', 'xl', 'yn', 'oq', 'tw', 'ua', 'afa', 'aeb', 'ahi', 'xq', 'ku', 'aga', 'rb', 'qw', 'ys', 'rk', 'mu', 'ug', 'ux', 'afg', 'acl', 'pw', 'mi', 'uc', 'abt', 'nc', 'qe', 'sv', 'zd', 'xe', 'aea', 'uj', 'ace', 'yg', 'ok', 'lb', 'pj', 'pd', 'agi', 'za', 'zf', 'aec', 'aiv', 'so', 'aan', 'abg', 'mk', 'vl', 'vz', 'abb', 'la', 'air', 'lo', 'ly', 'ww', 'kl', 'abk', 'vi', 'nu', 'rw', 'uu', 'acn', 'qk', 'add', 'ago', 'ou', 'mf', 'adb', 'ze', 'abx', 'xn', 'mc', 'ahf', 'wp', 'aew', 'abs', 'mg', 'wg', 'wx', 'abw', 'ma', 'vh', 'aix', 'oo', 'nt', 'wl', 'aah', 'abd', 'kx', 'aac', 'aaq', 'rd', 'wv', 'qb', 'xc', 'sf', 'sg', 'abo', 'afu', 'acm', 'aeh', 'mo', 'rg', 'yc', 'abe', 'ahr', 'mw', 'acc', 'afy', 'yr', 'ng', 'md', 'adj', 'adp', 'ahx', 'rq', 'tv', 'vn', 'ahu', 'wi', 'aij', 'uh', 'aih', 'ym', 'pp', 'ur', 'sm', 'agp', 'aad', 'wr', 'pr', 'lz', 'acv', 'te', 'ue', 'qx', 'afj', 'lh', 'nx', 'aek', 'ahc', 'yx', 'rh', 'xj', 'su', 'aal', 'aap', 'ne', 'aha', 'ls', 'tu', 'aiy', 'lu', 'aez', 'rl', 'px', 'act', 'aci', 'aim', 'acb', 'xu', 'sk', 'rm', 'aav', 'xk', 'ud', 'ms', 'ty', 'afq', 'qm', 'qd', 'ahb', 'afw', 'yz', 'ahl', 'adc', 'aex', 'mz', 'acy', 'uf', 'ow', 'zn', 'tc', 'nj', 'wt', 'ov', 'lk', 'aft', 'pe', 'wc', 're', 'yf', 'th', 'qf', 'zs', 'ni', 'mb', 'nm', 'acp', 'aeq', 'xa', 'aaw', 'ahj', 'afo', 'qq', 'agu', 'aep', 'aeu', 'mp', 'li', 'wk', 'kv', 'acw', 'yj', 'qu']\nOnly return the string element missing from Set_A.", "reference_file": "" }, { "task_id": "0sL35u", "task_prompt": "You are a graduate student working in the laboratory of a formerly renowned marine natural product chemist at a well-known land-grant university. You and your colleagues have been tasked with cataloguing a historical stock of secondary metabolites that have isolated over the PI’s career and entering these into a modern chemical inventory system. The compounds have been entered into the system as small molecule input line entry system (SMILES) codes. One of these, reportedly isolated from a marine sponge, catches your attention with the following SMILES code: \n\nO[C@@H](C[C@@H](O)[C@H](OO[C@@H](CC(N[C@@H](CC(C)C)C(N[C@@H](C(N[C@H]([C@H]1C)C(N[C@@](C(C)C)([H])C(N[C@@H](CC(C)C)C(N[C@H](CO)C(N[C@@H](CC(C)C)C(N[C@H](CO)C(N[C@](CC(C)C)([H])C(O1)=O)=O)=O)=O)=O)=O)=O)=O)CCC(O)=O)=O)=O)CCCCCCCCC)CC[C@@H](O)C[C@@H](O)CC2=O)C[C@@]3(O)O[C@H](CC(O[C@@]4([H])[C@@H](OC)[C@@H](N)[C@H](OC5=CC6=C(C=C5)C(C(C7=CN(N(C8=C9C=CC(Br)=C8)C=C9C(C%10=CN(S(=O)(O)=O)C%11=C%10C=C(C%12=CC%13=C(C=C%12Br)NC=C%13C(C%14=CN(S(=O)(O)=O)C%15=C%14C=CC(Br)=C%15)=O)C(Br)=C%11)=O)C%16=C7C=CC(Br)=C%16)=O)=CN6S(=O)(O)=O)[C@@H](C)O4)/C=C/C=C/C=C/C=C/C=C(Cl)/C=C(Cl)/C=C/[C@@H](C)[C@@H](OC([C@H]%17[C@@H](CC(O[C@@]%18([H])[C@@H](OC)[C@@H](N)[C@H](O)[C@@H](C)O%18)/C=C/C=C(C%19=C%20C([C@@]%21%22C(N%20)=C(C)C[C@@]%23(CC)[C@@H]%21N(CC%22)C[C@H]%24[C@@H]%23OC%25=C%24C=C([C@@]%26%27C(N%28)=C(C(OC)=O)C[C@@]%29(CC)[C@@H]%26N(CC%27)CC=C%29)C%28=C%25)=CC([C@@H]%30[C@@H]%31[C@@H](O%31)[C@@]%32(CC)CC(C(OC)=O)=C%33[C@]%34(C(C=C(O)C(OC)=C%35OC)=C%35N%33)[C@H]%32N%30CC%34)=C%19OC)/C=C/C=C/C=C(I)/C=C(I)/C=C/[C@@H](C)[C@@H](O)[C@@H](O)[C@H](O)OC%36=O)O[C@@](C[C@@H](O)C[C@@H](O)[C@H]%37CC([C@@H](O)C[C@@H](O)C%36)=C(CCCCCCCCC%38=CC=CC=C%38)O%37)(O)C[C@@H]%17O)=O)[C@@H](O)[C@H](O)O2)[C@H](C(OC)=O)[C@@H](O)C3\n\nYou happen to have a passing interest in cheminformatics, as well as logical deduction, so you attempt to decipher the structure of the metabolite from the SMILES code. For the purpose of this exercise, determine how many hydrogen atoms there are on the molecule.", "reference_file": "" }, { "task_id": "15yKc6", "task_prompt": "The receive coil of a 1.5T clinical MRI machine has a 1000 pF capacitor, soldered on one of its internal PCBs. Can it be replaced with a 2000 pF capacitor without affecting the coil's performance? We do not take into account the legal aspects of such a replacement, only the technical ones.", "reference_file": "" }, { "task_id": "1ncrzI", "task_prompt": "Clinical MRI coils often consist of multiple channels, each of which is a magnetic loop. In some cases, the channels are combined into triplets, where the signals from three separate channels are combined using fixed phase shifters of 90 and 180 degrees, producing three mixed signals. What is the purpose of such a combination?", "reference_file": "" }, { "task_id": "7iy4wr", "task_prompt": "In MRI gradient coil design, concomitant fields must be accounted for in the optimization process, as they can introduce artifacts into the final MR images. One of the concomitant magnetic fields along the X direction ($B_x$) can be calculated from the azimuthal and longitudinal components of the current density on the cylindrical surface. The radius ($r$) and length ($L$) of the cylinder are 0.4 m and 1.4 m, respectively. If the azimuthal ($J_\\theta$) and the longitudinal ($J_z$) components of the current density on the cylindrical surface are given by the Fourier series expansion as $J_\\theta(\\theta,z)=\\cos(\\theta)\\sum_{n=1}^{N} a_n \\cos\\!\\left(\\frac{2 n \\pi z}{L_a}\\right)$ and\n\n$J_z(\\theta,z)=\\sin(\\theta)\\sum_{n=1}^{N}\\frac{a_n L_a}{2 n \\pi r}\\sin\\!\\left(\\frac{2 n \\pi z}{L_a}\\right)$, respectively, where $L_a$ and $r$ are the length and radius of the cylinder, what will be the magnitude of the $B_x$ concomitant field at the target field point (-0.2, 0.1, 0.2) ? Assume the radial component of the current density ($J_r$)=0 and use permeability of free space ($\\mu_0$)=$4\\pi\\times 10^{-7}$ H/m. Also assume $a_n$=1 and $N=1$.\n Output your final answer in nanotesla with two decimal places. Example: 1.11 nanotesla", "reference_file": "" }, { "task_id": "93I7Dw", "task_prompt": "The receive coil of a 1.5T clinical MRI machine has a 5.6 uH inductance, soldered on one of its internal PCBs. Can it be replaced with an 8 uH inductance without affecting the coil's performance? We do not take into account the legal aspects of such a replacement, only the technical ones.", "reference_file": "" }, { "task_id": "CNODK8", "task_prompt": "Let $F_2$ be the free group of rank $2$. For each $n \\geq 2$, you are given a characteristic quotient $F_2 \\to A_n$, where $A_n$ denotes the alternating group of degree $n$. This induces a map $Aut(F_2) \\to Aut(A_n)$, which you are guaranteed is surjective.\n\nFor each $n$, let $S_n$ be the direct product of the image of all complex irreducible representations of $Aut(A_n)$, and let $Aut(A_n) \\to S_n$ be the diagonal homomorphism, which is surjective on each direct factor. Composing with the above defines a homomorphism $Aut(F_2) \\to S_n$. Define\n$\\alpha_n$ as the von Neumann dimension $dim_{\\mathcal{N}(S_n)} H_0(Aut(F_2), \\mathcal{N}(S_n))$. Compute the sum of all $\\alpha_n$, for $n \\geq 2$.", "reference_file": "" }, { "task_id": "GKcq0m", "task_prompt": "\nIn the following, $X=(X_n, n \\geq 0)$, $Y=(Y_n, n \\geq 0)$, $Z=(Z_n, n \\geq 0)$ etc. are \\emph{independent} discrete-time irreducible Markov chains on a countable state space $\\mathcal{X}$. Let $M^{X,Y}=\\{X_n=Y_n\\text{ for infinitely many }n\\}$ be the event that the Markov chains $X$ and $Y$ meet infinitely often; the events $M^{X,Z}$ and $M^{Y,Z}$ are defined analogously. Starting location(s) of the Markov chain(s) are indicated as subscripts; e.g., $\\mathbb{P}_{x_0,y_0}[\\cdot]$ stands for $\\mathbb{P}[\\cdot \\mid X_0=x_0, Y_0=y_0]$.\n\nClassify the following statements as true (\"True\") or false (\"False\"). Make sure you are able to rigorously prove the statements which are true and to present counter-examples (and prove that these do work) to the statements which are false. Your final answer must folow the exact format: 1. True|False 2. True|False ... 20. True|False\n\n Example:\n Answer: 1. True 2. False ... 20. True \n\n1. If $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ for at least one pair $x_0,y_0$, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ for all $x_0,y_0$.\n\n2. If $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for at least one pair $x_0,y_0$ and $X$ is aperiodic, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for all $x_0,y_0$.\n\n3. If $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for at least one pair $x_0,y_0$ and both $X$ and $Y$ are aperiodic, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for all $x_0,y_0$.\n\n4. If $X$ is recurrent and $Y$ is transient, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ for all $x_0,y_0$.\n\n5. If $X$ is recurrent and $Y$ is transient, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ for at least one pair $x_0,y_0$.\n\n6. If both $X$ and $Y$ are recurrent, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for at least one pair $x_0,y_0$.\n\n7. For any Markov chains $X$, $Y$ and all $x_0,y_0$ it holds that $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ or $1$ (i.e., we have a 0-1 law for the event $X$ and $Y$ meet infinitely often). \n\n8. If $\\mathcal{X}=\\mathbb{Z}^d$ and $X$ and $Y$ are spatially homogeneous random walks, then for all $x_0,y_0$ it holds that $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ or $1$ (i.e., we have a 0-1 law for the event $X$ and $Y$ meet infinitely often). \n\n9. If $X$ and $Y$ are simple random walks on an infinite graph of uniformly bounded degree, then for all $x_0,y_0$ it holds that $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=0$ or $1$ (i.e., we have a 0-1 law for the event $X$ and $Y$ meet infinitely often). \n\n10. For any $\\alpha\\in(0,1)$ it is possible to construct an example of two Markov chains $X$, $Y$ with state space $\\mathbb{Z}$ and only nearest-neighbor jumps, such that $\\mathbb{P}_{0,0}[M^{X,Y}]=\\alpha$.\n\n11. If both $X$ and $Y$ are positive recurrent, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for all $x_0,y_0$.\n\n12. If both $X$ and $Y$ are positive recurrent and $Y$ is aperiodic, then $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ for all $x_0,y_0$.\n\n13. If $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=1$ and $\\mathbb{P}_{x_0,z_0}[M^{X,Z}]=1$, than we have $\\mathbb{P}_{y_0,z_0}[M^{Y,Z}]=1$.\n\n14. If $\\mathbb{P}_{x_0,y_0}[M^{X,Y}]=\\mathbb{P}_{x_0,z_0}[M^{X,Z}]=\\mathbb{P}_{y_0,z_0}[M^{Y,Z}]=1$ for all $x_0,y_0,z_0$, then $\\mathbb{P}_{x_1,y_1,z_1}[\\text{there exists }n>0 \\text{ such that }X_n=Y_n=Z_n]=1$ for at least one triple $(x_1,y_1,z_1)$.\n\n15. Let $X,Y$ be one-dimensional null-recurrent Markov chains with only nearest-neighbour jumps, and let $U$ be a positive recurrent Markov chain (also in $\\mathcal{X}=\\mathbb{Z}$). It is possible to construct an example such that $\\mathbb{P}_{0,0,0}[U_n=X_n=Y_n\\text{ infinitely often}]=1$.\n\n16. Let $X^{(1)},\\ldots,X^{(k)}$ be one-dimensional null-recurrent Markov chains with only nearest-neighbour jumps, and let $U$ be a positive recurrent Markov chain (also in $\\mathcal{X}=\\mathbb{Z}$). For any $k$ it is possible to construct an example such that $\\mathbb{P}_{0,\\ldots,0}[U_n=X^{(1)}_n=\\ldots=X^{(k)}_n\\text{ infinitely often}]=1$.\n\n17. Let $X,Y$ be one-dimensional Markov chains with only nearest-neighbour jumps, such that $X$ is positive recurrent and $Y$ is transient. Then $\\mathbb{P}_{0,0}[M^{X,Y}]=0$.\n\n18. Assume that the state space $\\mathcal{X} = \\mathbb{Z}^3$. It is possible to construct an example of spatially homogeneous independent random walks $X$ and $Y$ with bounded jumps such that $\\mathbb{P}_{0,0}[M^{X,Y}]=1$.\n\n19. Assume that the state space $\\mathcal{X} = \\mathbb{Z}^3$. We say that a Markov chain is \\emph{uniformly elliptic} if $\\mathbb{P}_{xy}>\\varepsilon$ for all neighbours $x,y\\in \\mathbb{Z}^3$, where $\\varepsilon>0$ is some constant. Let $X$ be a uniformly elliptic zero-mean Markov chain with uniformly bounded jumps, and $Y$ be a positive-recurrent Markov chain. Then $\\mathbb{P}_{0,0}[M^{X,Y}]=0$.\n\n20. Assume that the state space $\\mathcal{X} = \\mathbb{Z}^2$ and $X$ is a simple random walk. Then, for any uniformly elliptic zero-mean Markov chain $Y$ with uniformly bounded jumps we have $\\mathbb{P}_{0,0}[M^{X,Y}]=1$.", "reference_file": "" }, { "task_id": "ISZkG7", "task_prompt": "Consider the antisymmetrized gamma matrices $\\gamma_{\\mu_1 \\ldots \\mu_k}\\equiv \\gamma_{[\\mu_1}\\ldots \\gamma_{\\mu_k]}$ in $d$ dimensions.\nThe product $\\gamma_{\\mu \\nu \\rho}\\gamma_{\\mu_1 \\ldots \\mu_k}\\gamma^{\\mu \\nu\\rho}$ is proportional to \n$\\gamma_{\\mu_1 \\ldots \\mu_k}$. What is the proportionality factor?\n Your final answer must be formatted as a LaTeX expression wrapped in $...$", "reference_file": "" }, { "task_id": "LLI-001", "task_prompt": "What is the IUPAC name of the product of methyl phenyl sulfoxide (1.0 eq.) with 1 equivalent of triflic anhydride and 1 equivalent of trimethylsilyl cyanide?", "reference_file": "" }, { "task_id": "LLI-002", "task_prompt": "Aqueous solutions of barium chloride and silver nitrate were poured into one flask. The resulting mass was dried using freeze drying and ammonia was added. After mixing the reaction mixture, the ammonia was also evaporated using freeze drying. What barium salt is in the flask after all reactions? provide the molecular formula of the barium salt", "reference_file": "" }, { "task_id": "LLI-003", "task_prompt": "What is the symmetry group of the molecule with this SMILES string (C#CC1=C(C=C2)C3=C4C5=C6C7=C3C2=CC(C#C)=C7C=CC6=CC(C#C)=C5C=CC4=C1)?", "reference_file": "" }, { "task_id": "LLI-007", "task_prompt": "2,8-bis(4-(2-ethylhexyl)thiophen-2-yl)-5-methyl-4H-dithieno[3,2-e:2',3'-g]isoindole-4,6(5H)-dione is an important A unit for organic solar cell polymers. We want to have bromination on the thiophene using NBS to prepare the monomer. When we added 2 eq of NBS, the spot remains the same on TLC. So we added an extra amount of NBS (0.5 eq, 2.5 eq in total). After one hour, we found a new spot on TLC. When we isolated the new spot, it showed three peaks that are larger than 6.0 ppm in H-NMR. What is this new spot?", "reference_file": "" }, { "task_id": "LLI-010", "task_prompt": "Air-stable organic radicals are promising structures for OLED because it can avoid forbidden transition. But it has a strong disadvantage compared to other non-radical materials. What is that and Why? Answer Choices: A. not stable to oxygen because it is highly reactive B. wide FWDH because it has multiple emissions C. low luminance because radicals can quench each other D. low EQE because excitons can be quenched by the radicals E. low EQE because delocalization of the radical will have multiple emissions\n Your final answer must contain only an uppercase letter (A ,B ,C ,D ,E).", "reference_file": "" }, { "task_id": "LLI-013", "task_prompt": "When a student is purifying ((2R,3R,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-4,4-difluoro-3-hydroxytetrahydrofuran-2-yl)methyl 2,2,2-trifluoroacetate, he used column chromatography (eluent: DCM:CH3OH = 9:1). He did a TLC and found that it contains two spots with Rf = 0.45 and Rf = 0.02, respectively. However, when he started the chromatography, nothing was coming out under these conditions. How should he solve it? Answer Choices: A. add NEt3 when he did the column B. use DCM/acetone to do the column C. wash the column before to eliminate all the water D. should not use rotovap E. repeat the experiment.\nYour final answer must contain only an uppercase letter (A ,B ,C ,D ,E).", "reference_file": "" }, { "task_id": "LLI-016", "task_prompt": "Why does tributyltin chloride (TBT-Cl) tend to be less dangerous than trimethyltin chloride (TMT-Cl) for humans? Choose the most important factor. Answer Choices: A. TBT-Cl has higher boiling point for people to inhale B. TMT-Cl has a significantly lower LD50 value in mice C. TMT-Cl is more cell permeable D. TMT-Cl is more reactive to nucleophiles E. TBT-Cl can be easily degraded by human cells\nYour final answer must contain only an uppercase letter (A ,B ,C ,D ,E).", "reference_file": "" }, { "task_id": "LbE4sy", "task_prompt": "Provide a molecular formula for the depicted molecule. image location: refs/Compound_10.png", "reference_file": "Compound_10.png" }, { "task_id": "Mxadld", "task_prompt": "I'm testing a clinical MRI receive coil. For this, I'm using a two-port vector network analyzer (VNA). The first channel of the VNA is connected to the magnetic loop RF probe, and the second channel is connected to the RF output of the coil. I measure S21 by placing the RF probe over the coil channel under test. What should the S21 plot shape look like if all coil components are working properly and the coil channel preamplifier is also properly powered?", "reference_file": "" }, { "task_id": "N8iZko", "task_prompt": "Provide a molecular formula for the depicted molecule. image location: refs/Compound_2.png", "reference_file": "Compound_2.png" }, { "task_id": "WmZccO", "task_prompt": "Consider the attached reference file which defines the bipartite graph complex induced by a graph property P and two positive integers m and n. For the following subtasks you can assume that both m and n are larger than 100 to avoid corner cases.\\n\\nT1\\nLet m be a power of 2, let n be a power of 3 and let P be the property of being triangle-free. Compute the reduced Euler characteristic of the bipartite graph complex induced by P, m, and n.\\n\\nT2\\nLet P be the property of not having a perfect matching. Let m=n be an odd prime. Compute, modulo n, the reduced Euler characteristic of the bipartite graph complex induced by P, m, and n.\\n\\nT3\\nLet P be the property of being planar. Let m = n-1. Compute, modulo n, the reduced Euler characteristic of the bipartite graph complex induced by P, m, and n.\\n\\nT4\\nLet P be the property of not containing as a subgraph the complete bipartite graph with 101 vertices on each side. Let m=1000, and let n be a power of 23. Compute, modulo 23, the reduced Euler characteristic of the bipartite graph complex induced by P, m, and n.\\n\\nT5\\nLet P be the property of having treewidth smaller than 5, and let n be a power of a prime q. Let furthermore m