[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][O][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][/C][=C][/C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid dianion resuting from removal of a proton from both carboxy groups of 4-fumarylacetoacetic acid. It has a role as a metabolite and a human metabolite. It is functionally related to an oct-2-enedioate. It is a conjugate base of a 4-fumarylacetoacetic acid."}]