[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][=Branch1][=C][C][=N][Ring1][#Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion resulting from the deprotonation of the carboxy group of quinoline-4-carboxylic acid. It is a conjugate base of a quinoline-4-carboxylic acid."}]