[{"from": "human", "value": "Please give me some details about this molecule. [C][NH1+1][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of N-methylproline; major species at pH 7.3. It has a role as a plant metabolite and a human metabolite. It is a tautomer of a N-methylproline."}]