[{"from": "human", "value": "Describe this molecule. [C][C][O][C][=Branch1][C][=O][C][=Branch1][C][=O][O][C][C]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid. Slightly denser than water and insoluble in water. Hence sinks in water. May irritate skin and mucous membranes; may be mildly toxic by ingestion; may emit irritating fumes in a fire. Vapors are much heavier than air. Used as a solvent for plastics and in the manufacture of perfumes and pharmaceuticals."}]