[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][#C]"}, {"from": "gpt", "value": "The molecule appears as a colorless liquefied gas with a sweet odor. mp: -104 \u00b0C, bp: -23.1 \u00b0C. Insoluble in water, soluble in ethanol, chloroform and benzene. Moderately toxic by inhalation. Used as a specialty fuel. Denser than air. Vapors may ignite at distant sources of ignition and flash back."}]