[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an oxo dicarboxylate obtained by deprotonation of both carboxy groups of 2,5-dichloro-4-oxohex-2-enedioic acid. It is functionally related to a 4-oxohex-2-enedioate. It is a conjugate base of a 2,5-dichloro-4-oxohex-2-enedioic acid."}, {"from": "gpt", "value": "[C][=Branch1][#Branch2][=C][Branch1][=Branch1][/C][=Branch1][C][=O][O-1][\\Cl][\\C][=Branch1][C][=O][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][Cl]"}]