[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an organic heteroheptacyclic compound isolated from the bark of Indonesian Garcinia gaudichaudii and exhibits cytotoxic activity. It has a role as a metabolite and an antineoplastic agent. It is a bridged compound, a cyclic ether, a cyclic ketone, an organic heteroheptacyclic compound and an oxo monocarboxylic acid."}, {"from": "gpt", "value": "[C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][Branch2][#Branch1][C][O][C][=C][Branch2][=Branch1][Ring1][C][=C][Branch2][Branch1][Ring1][C][=Branch1][C][=O][C][C][Branch2][Ring2][Branch2][C@H1][C][C@H1][C@][Ring1][=Branch1][Branch1][Ring2][O][Ring1][O][C@@][Branch1][Branch1][C][Ring1][#Branch1][=O][Branch1][=Branch2][O][C][Ring1][Branch2][Branch1][C][C][C][C][/C][=C][Branch1][C][\\C][/C][=Branch1][C][=O][O][O][C][C][=Branch1][Branch2][=C][Ring2][Ring2][Branch1][Ring2][Ring1][#C][O][C][Branch1][C][C][Branch1][C][C][C][=C][Branch1][C][C][C]"}]