[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a peptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Phe-Ala; major species at pH 7.3. It is a tautomer of a Phe-Ala."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][NH3+1]"}]