[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a platinum coordination entity that is the cationic portion of triplatin tetranitrate. It has a role as an antineoplastic agent. It is a platinum coordination entity and an organic cation."}, {"from": "gpt", "value": "[C][Branch1][Branch1][C][C][C][N][C][C][N].[C][Branch1][Branch1][C][C][C][N][C][C][N].[N].[N].[N].[N].[N].[N].[Cl][Pt+1].[Cl][Pt+1].[Pt+2]"}]