[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch1][C][=O][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an oxo dicarboxylate. It is functionally related to a malonate(2-). It is a conjugate base of an oxomalonate(1-)."}]