[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][Branch1][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule appears as a yellow crystalline solid or an oily liquid consisting of the three isomers. Insoluble in water and denser than water. Produces toxic oxides of nitrogen during combustion. Toxic by skin absorption, ingestion or inhalation."}]