Update ReactionToImage parameters for better SVG rendering

app.py

@@ -231,7 +231,7 @@ def reaction_smiles_to_svg(reaction_smiles: str) -> str:
                 reaction.AddProductTemplate(mol)
 
         # Draw the reaction as SVG
-        svg = Draw.ReactionToImage(reaction, subImgSize=(300, 300), useSVG=True)
+        svg = Draw.ReactionToImage(reaction, subImgSize=(200, 200), useSVG=True, drawOptions=None, returnPNG=False)
         
         return svg