[{"from": "human", "value": "Describe this molecule. [C][C][C@][Branch1][C][C][Branch2][Branch1][S][C][=Branch1][C][=O][O][C@@H1][C@H1][C@@][Branch2][Branch1][Ring2][C@H1][Branch2][Ring2][#C][C@@H1][Branch2][Ring2][#Branch2][C@H1][C@@][Ring1][=Branch1][Branch1][Branch1][C][O][Ring1][#Branch1][C@@H1][Branch2][Ring1][=Branch1][C][C@@H1][C@@][Ring1][Branch2][Branch1][=C][C@@H1][Branch1][#Branch2][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][O][C][O][C][Ring2][Ring1][#Branch1][=O][O][O][C][O][C][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is a quassinoid isolated from Quassia amara and Leitneria floridana and has been shown to exhibit antitumour activity. It has a role as an antineoplastic agent and a metabolite. It is a quassinoid, a delta-lactone, an organic heteropentacyclic compound, a cyclic ether, an enone, a triol, an acetate ester and a bridged compound."}]