[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a D-alpha-amino acid zwitterion that is D-proline in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. It is a tautomer of a D-proline."}, {"from": "gpt", "value": "[C][C][C@@H1][Branch1][Branch1][NH2+1][C][Ring1][Branch1][C][=Branch1][C][=O][O-1]"}]