[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=Branch1][C][=O][O][C@H1][C][C@@][Branch2][Branch1][#C][C@@H1][C][C][C][=C][C@@H1][C@@H1][Branch2][Ring1][P][C][C@@][Ring1][=Branch1][Branch2][Ring1][=Branch2][C@H1][Ring1][#Branch2][C][C][C@@][Ring1][=C][Branch1][=C][C@H1][Ring1][P][C][=C][C][=Branch1][C][=O][O][C][Ring1][=Branch1][C][C][O][C@][Branch1][S][C@H1][Branch1][O][C][C][O][C@H1][Ring1][=Branch1][O][Ring2][Ring1][=Branch2][O][C][O][O]"}, {"from": "gpt", "value": "The molecule is a steroid lactone isolated from Elaeodendron tangenala and Elaeodendron glaucum and exhibits antiproliferative activity against A2780 human ovarian cancer cells. It has a role as a metabolite and an antineoplastic agent. It is a butenolide, a cyclic ether, an organic heterohexacyclic compound, an acetate ester and a steroid lactone."}]