[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][S-1][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a thiomalate(2-). It is a tautomer of a 2-mercaptosuccinate."}]