[{"from": "human", "value": "Describe this molecule. [C][=Branch1][#Branch1][=C][C][=Branch1][C][=O][O-1][C][=Branch1][#Branch2][=C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][Cl][Cl]"}, {"from": "gpt", "value": "The molecule is a dichloromuconate(2-) obtained by deprotonation of the carboxy groups of 2,3-dichloromuconic acid; major species at pH 7.3. It is a conjugate base of a 2,3-dichloromuconic acid."}]