add more functions

app.py

@@ -239,7 +239,7 @@ def analyze_single_smiles(smiles):
         }
 """
 def annotate_cyclic_structure(mol, sequence):
-    """Create annotated 2D structure with clear, non-overlapping residue labels"""
+    '''Create annotated 2D structure with clear, non-overlapping residue labels'''
     # Generate 2D coordinates
     # Generate 2D coordinates
     AllChem.Compute2DCoords(mol)