[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][O][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][/C][=C][/C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an oxo dicarboxylic acid, a beta-diketone and a dicarboxylic fatty acid. It is functionally related to an oct-2-enedioic acid. It is a conjugate acid of a 4-fumarylacetoacetate(2-)."}]