[{"from": "human", "value": "Could you provide a description of this molecule? [C][/C][=C][/C][/C][=C][/C][/C][=C][/C][C][=C]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquid. Less dense than water and insoluble in water. Vapors are heavier than air. May irritate skin and eyes, and may be narcotic in high concentrations. Used to make other chemicals."}]