What it understands

• Condensed formulas — the way structures get written by hand, including branches, repeat units and open valences.
• IUPAC names — locants, multipliers, unsaturation, functional-group suffixes, stereodescriptors.
• Common and trade names — from acetone to amoxicillin.
• SMILES and InChI — pasted straight in, or prefixed with smiles: to be sure.