[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a brown crystalline solid. Non corrosive. Used as an insecticide."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch2][Ring1][C][=C][Branch1][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][N][C][C][C]"}]