[{"from": "human", "value": "Describe this molecule. [C][N][C][C][C][C][Ring1][Branch1][C@@H1][Branch1][Branch2][C@H1][Branch1][Ring2][C][Ring1][#Branch1][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a tropane alkaloid."}]