[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an abietane diterpenoid that is ent-abieta-2(3),13(15)-diene-16,12-olide substituted by a 1beta-acetoxy group and a beta-epoxy group across positions 8 and 14. Isolated from the leaves of Gelonium aequoreum, it exhibits moderate cytotoxicity against lung (A549), breast (MDAMB-231 and MCF7), and liver (HepG2) cancer cell lines. It has a role as a metabolite and an antineoplastic agent. It is an abietane diterpenoid, an acetate ester, an organic heteropentacyclic compound, an epoxide and a gamma-lactone."}, {"from": "gpt", "value": "[C][C][=C][C@@H1][Branch2][Ring2][Branch2][C][C@H1][C@][Branch2][Ring1][P][C@H1][Branch1][N][C][C][C@@][Ring1][=Branch1][C@@H1][Ring1][#Branch2][O][Ring1][Ring1][C][Branch1][N][C][=C][C@H1][Ring1][O][O][C][=Branch1][C][=O][C][Branch1][C][C][C][C][O][C][Ring2][Ring1][=Branch2][=O]"}]