[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule appears as a light amber liquid. Less dense than water and insoluble in water. Vapors heavier than air. Produces toxic oxides of nitrogen during combustion. Used to make other chemicals."}, {"from": "gpt", "value": "[C][C][N][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C]"}]