[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch2][Ring2][=N][C][C][C@@H1][Branch2][Ring2][=Branch1][C@][C@@H1][Ring1][=Branch1][C][C@][Branch2][Ring1][=Branch1][C@][C@H1][Ring1][=Branch1][C][C][C@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][C][=Branch1][C][=C][C][Ring1][#Branch2][=O][Branch1][Branch1][O][C][Ring1][P][O][O][C]"}, {"from": "gpt", "value": "The molecule is a cyclic terpene ketone that is ent-7alpha,20-epoxy-kaur-16-en-15-one substituted with hydroxy groups at positions 1, 7 and 14 (the 1alpha,7beta,14beta stereoisomer). Isolated from the leaves of Isodon megathyrsus, it exhibits cytotoxic activity. It has a role as a metabolite and an antineoplastic agent. It is a lactol, a bridged compound and a cyclic terpene ketone. It derives from a hydride of an ent-kaurene."}]