[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a tropane alkaloid."}, {"from": "gpt", "value": "[C][C][C@H1][Branch1][S][C@][Branch1][N][C@@H1][Branch1][Branch2][C][C@@H1][Ring1][#Branch1][N][Ring1][Branch1][O][O][O]"}]