[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=Branch1][=Branch1][=C][N][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a carboxylic acid anion resulting from the removal of a proton from the carboxy group of 4-oxo-4-(pyridin-3-yl)butanoic acid. The major species at pH 7.3. It is a conjugate base of a 4-oxo-4-(pyridin-3-yl)butanoic acid."}]