[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a 7,8-diaminononanoate cation."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring1][Ring2][C@@H1][Branch1][O][C][C][C][C][C][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][O-1][NH3+1]"}]