You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: When heated to decomp it emits very toxic fumes of hydrogen chloride & nitrogen oxides./ The molecule has Mild odor.
user
Cl.Cl.Nc1ccc(-c2ccc(N)c(Cl)c2)cc1Cl
assistant