[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][Branch1][=N][C][Ring1][Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the anion resulting from the removal of a proton from the carboxylic acid group of 1-pyrroline-2-carboxylic acid. It has a role as a human metabolite. It is a conjugate base of a 1-pyrroline-2-carboxylic acid and a 1-pyrroline-2-carboxylic acid zwitterion."}]