[{"from": "human", "value": "Describe this molecule. [C][O][C][=C][C][=Branch2][Ring1][#Branch2][=C][C][=Branch2][Ring1][Ring1][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][O][O][C][/C][=C][/C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is dicarboxylate anion of sinapic acid (S)-malate ester It is a conjugate base of a sinapic acid (S)-malate ester."}]