[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][C][=C][Branch2][=Branch1][#Branch2][C][=Branch1][C][=O][C@][Branch2][Branch1][P][C@H1][Ring1][#Branch1][C][C@@H1][C@][C@@H1][Ring1][=Branch1][C@H1][Branch2][Branch1][Ring1][C@@H1][Branch2][Ring2][=C][C@][Branch2][Ring1][=N][C@@H1][Ring1][=Branch1][C@H1][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][O][O][C][=Branch1][C][=O][/C][=C][Branch1][C][\\C][/C][Branch1][C][C][C][Branch1][=Branch1][O][C][Ring2][Ring1][Branch1][C][=Branch1][C][=O][O][C][O][O][C][O]"}, {"from": "gpt", "value": "The molecule is a quassinoid isolated from Brucea antidysenterica and has been shown to exhibit in vitro cytotoxicity towards several human tumour cell lines. It has a role as a metabolite and an antineoplastic agent. It is a delta-lactone, a cyclic ether, an enoate ester, an organic heteropentacyclic compound, a pentacyclic triterpenoid, a quassinoid, a triol, an enol and a methyl ester."}]