You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: ... may polymerize explosively ... uninhibited monomer vapor may form polymer in vents and other confined spaces ... The molecule has Sharp, unpleasant odor. The substance decomposes on contact with water. the substance decomposes rapidly on contact with acids and bases producing toxic gases (hydrogen cyanide, nitrogen oxides, carbon monoxide). Please represent the molecule in SMILES.
user