[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][C][=Branch1][C][=O][C][=C][C][=Branch1][C][=O][C][Ring1][Branch2][=C][Ring1][N]"}, {"from": "gpt", "value": "The molecule is an organic compound derived from naphthalene. Several isomeric naphthoquinones are known, notably 1,2-naphthoquinone. 1,4-Naphthoquinone forms volatile yellow triclinic crystals and has a sharp odor similar to benzoquinone. It is almost insoluble in cold water, slightly soluble in petroleum ether, and more soluble in polar organic solvents. In alkaline solutions it produces a reddish-brown color. Vitamin K is a derivative of 1,4-naphthoquinone. It is a planar molecule with one aromatic ring fused to a quinone subunit. Naphthalene is a constituent of jet fuel, diesel fuel and cigarette smoke. It is also a byproduct of incomplete combustion and hence is an ubiquitous environmental pollutant. The typical air concentration of naphthalene in cities is about 0.18 ppb.\n"}]