[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. 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][O][C][C@H1][C][C@H1][C@@][Branch2][Branch1][O][C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Branch1][Ring2][O][Ring1][#Branch1][C][=Branch2][Ring1][S][=C][C][=Branch1][Branch1][=C][Ring1][#Branch1][O][C][=C][Branch1][#Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][Branch1][Ring2][O][Ring1][=N][Branch1][C][C][C][C][Branch1][C][C][Branch1][C][C][C][=C][C@@][Branch1][=Branch1][C][Ring2][Ring1][P][=O][Branch1][#Branch2][O][C][Ring2][Ring2][C][Branch1][C][C][C][C][/C][=C][Branch1][C][\\C][/C][=Branch1][C][=O][O]"}]