[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][#Branch1][NH2+1][C][C][Ring1][Branch1][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion obtained from 4-oxoproline by transfer of a proton from the alpha-carboxy group to the amino group; major species at pH 7.3. It is a tautomer of a 4-oxoproline."}]