[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][C][=O][N][C][=C][Ring1][#Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the conjugate base of 1,4,5,6-tetrahydro-6-oxonicotinic acid; major species at pH 7.3. It is a conjugate base of a 1,4,5,6-tetrahydro-6-oxonicotinic acid."}]