[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an organic heterotricyclic compound, an organonitrogen heterocyclic compound and an oxacycle."}, {"from": "gpt", "value": "[C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][N][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][O][C][C][=C][O][Ring1][Branch2]"}]