[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an organic heterotricyclic compound, an organonitrogen heterocyclic compound and an oxacycle."}, {"from": "gpt", "value": "[C][C][O][C][=Branch1][C][=O][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][C][=C][Branch1][Ring2][O][Ring1][Branch1][N][=C][C][=C][C][=Branch1][Branch2][=C][C][Ring1][=Branch1][=C][Ring1][O][O][C]"}]