[{"from": "human", "value": "Provide a description of this molecule. [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]"}, {"from": "gpt", "value": "The molecule is a tropane alkaloid."}]