[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule appears as a colorless liquid. Insoluble in water and less dense than water. Vapors heavier than air. Contact may irritate skin, eyes and mucous membranes. Used as a solvent."}, {"from": "gpt", "value": "[C][C][C][C][C][C][Branch1][C][C][Branch1][C][C][C][Branch1][C][C][Branch1][C][C][C]"}]