[{"from": "human", "value": "Please give me some details about this molecule. [C][=Branch2][Ring1][Ring1][=C][/C][=Branch1][#Branch2][=C][Branch1][=Branch1][\\C][=Branch1][C][=O][O][/O-1][/C][=Branch1][C][=O][O-1][\\C][=O]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid dianion arising from deprotonation of both carboxy groups of 2-hydroxy-3-(3-oxoprop-1-enyl)but-2-enedioic acid; major species at pH 7.3. It is a conjugate base of a 2-hydroxy-3-(3-oxoprop-1-enyl)but-2-enedioic acid."}]