[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@H1][Branch1][=Branch2][C][C][C][=C][Branch1][C][C][C][C@H1][C][C][C@][Branch2][Ring1][#C][C@H1][Ring1][Branch1][C][/C][=C][Branch2][Ring1][Ring2][\\C@@H1][C@H1][Branch1][Ring2][C][Ring1][Branch2][C@][Branch1][=Branch1][C][C][Ring1][=Branch1][=O][Branch1][C][C][O][/C][=O][C]"}, {"from": "gpt", "value": "The molecule is a sesterterpenoid that is ophiobolane with a hydroxy group at position 3, oxo group at positions 5, formyl group at position 7, and double bonds at positions 7-8 and 19-20. It has a role as an antineoplastic agent, an apoptosis inducer, an Aspergillus metabolite, a chemokine receptor 5 antagonist, a nematicide and a fungal metabolite. It is a cyclic ketone, an enal, a sesterterpenoid, a tertiary alcohol, a carbotricyclic compound and an olefinic compound. It derives from a hydride of an ophiobolane."}]