[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is an S-hydrocarbyl-L-cysteine that is L-cysteine in which the hydrogen attached to the sulphur is replaced by a prop-2-enyl group. It commonly occurs in garlic and has been found to exhibit antineoplastic activity. It has a role as a metabolite and an antineoplastic agent. It is a tautomer of a S-allylcysteine zwitterion."}]