[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule appears as a colorless liquid. Insoluble in water and denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Used to make other chemicals."}, {"from": "gpt", "value": "[C][C][Branch1][Branch2][C][C][C][C][N][=C][=O][C][Branch1][C][C][Branch1][C][C][N][=C][=O]"}]