You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
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I need a molecule that meets the following conditions: Decomposes on contact with hot surfaces or flames. this produces toxic and corrosive gases of hydrogen chloride, phosgene, hydrogen fluoride and carbonyl fluoride. reacts violently with powdered metals. this generates fire and explosion hazard. attacks magnesium and its alloys. The molecule is onion. The molecule is sulfurous and has a Faint solvent odor. Please represent the molecule in SMILES.
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