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: When heated to decomposition it emits very toxic fumes of chloride and nitrogen oxides. The molecule has Slight, characteristic odor. Please represent the molecule in SMILES.
user
O=C(Nc1ccc(Cl)cc1)Nc1ccc(Cl)c(Cl)c1
assistant