[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a tropane alkaloid."}, {"from": "gpt", "value": "[C][N][C][C][C][C][Ring1][Branch1][C][C][Branch1][Ring2][C][Ring1][#Branch1][O][C][=Branch1][C][=O][C@@H1][C][C][S][S][Ring1][Branch1]"}]