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