[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule appears as a white to light-colored crystalline solid. Insoluble in water and denser than water. Contact may cause irritation to skin, eyes, and mucous membranes. May be toxic by ingestion. Used to make other chemicals."}, {"from": "gpt", "value": "[C][C][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][N][C][C][C][C][C][C][Ring1][=Branch1].[N][=Branch1][C][=O][O]"}]