[{"from": "human", "value": "Describe this molecule. [C][=C][C][=N][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule appears as a clear colorless to light yellow liquid with a penetrating nauseating odor. Density 0.978 g / cm3. Flash point 68 \u00b0F. Vapors are heavier than air. Toxic by ingestion and inhalation. Combustion produces toxic oxides of nitrogen."}]