[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a diterpenoid that is the 3alpha-hydroxy-11-oxo derivative of ent-cassa-12,15-diene. It is a diterpenoid, an enone and a secondary alcohol. It derives from a hydride of an ent-cassa-12,15-diene."}, {"from": "gpt", "value": "[C][C@H1][C@H1][C][C][C@H1][C@][Branch1][=C][C@@H1][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Ring1][O][C][=C][Branch1][=C][C][C][C@H1][Branch1][Branch2][C][Ring1][=N][Branch1][C][C][C][O][C]"}]