You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: Polymerizes easily. Hydrogen chloride and phosgene gases may form; both are toxic and irritating. The molecule has Pungent, irritating odor.
user
C=CC[Si](Cl)(Cl)Cl
assistant