[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a phthalate that is the conjugate base of phthalic acid. It has a role as a human xenobiotic metabolite. It is a phthalate and a dicarboxylic acid monoanion. It is a conjugate base of a phthalic acid. It is a conjugate acid of a phthalate(2-)."}, {"from": "gpt", "value": "[C][=C][C][=C][Branch1][N][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O-1]"}]