[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][/C][=Branch1][#Branch1][=C][/C][=Branch1][C][=O][O][/C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a tricarboxylic acid. It is a conjugate acid of a but-1-ene-1,2,4-tricarboxylate."}]