[{"from": "human", "value": "Describe this molecule. [C][C][C][Branch1][Ring2][C][Ring1][Ring2][Branch1][=Branch1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid monoanion. It is a conjugate base of a cyclobutane-1,1-dicarboxylic acid. It is a conjugate acid of a cyclobutane-1,1-dicarboxylate(2-)."}]