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: The molecule has Pungent odor. Polymerization may be caused by elevated temperature, oxidizers, peroxides. When heated to decomposition it emits toxic fumes of chlorine. Please represent the molecule in SMILES.
user
C=CCOC(=O)Cl
assistant