[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][O][C][C][=C]"}, {"from": "gpt", "value": "The molecule appears as a liquid with an odor of radishes. Less dense than water. May be toxic by ingestion, skin absorption, and inhalation, and may irritate skin and eyes. Vapors heavier than air. Used to make other chemicals."}]