[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][NH2+1][C@@H1][Branch1][Branch1][C@@H1][Ring1][Branch1][O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the zwitterion formed from cis-3-hydroxy-L-proline by proton transfer from the carboxy group to the ring nitrogen. It is the predominant species at physiological pH. It is a tautomer of a cis-3-hydroxy-L-proline."}]