You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: When heated to decomposition it emits toxic fumes of chlorides, hydrogen chloride and nitrogen oxides.
user
O=c1n(CCCN2CCN(c3cccc(Cl)c3)CC2)nc2ccccn12
assistant