[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=C][Branch2][Ring1][C][C][=Branch1][Ring2][=C][Ring1][=Branch1][/C][=C][/C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid dianion resulting from removal of a proton from both carboxy groups of trans-2-carboxybenzylidenepyruvic acid. It is functionally related to a pyruvate."}]