[{"from": "human", "value": "Could you provide a description of this molecule? [C][S][C][C][C][C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a 3-(omega-methylthio)alkylmalic acid in which the 3-alkyl group is specified as 3-(methylthio)propyl. It is a conjugate acid of a 3-(3-methylthio)propylmalate(2-)."}]