[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an amino acid zwitterion that is the conjugate base of cationic diphthine, formed via deprotonation of both carboxy groups and protonation of the primary amino group; major species at pH 7.3. It is a conjugate base of a diphthine."}, {"from": "gpt", "value": "[C][N+1][Branch1][C][C][Branch1][C][C][C@@H1][Branch2][Ring1][=Branch1][C][C][C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][=Branch1][C][=O][O-1]"}]