[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=Branch1][P][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][N]"}, {"from": "gpt", "value": "The molecule appears as a grayish-yellow to grayish-red, crystalline solid. Toxic by ingestion, inhalation, and skin absorption. Combustion produces toxic oxides of nitrogen. Used to make other chemicals and in chemical and biological analysis."}]