[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][Cl]"}, {"from": "gpt", "value": "The molecule appears as a colorless to white colored crystalline solid. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make other chemicals."}]