You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): When heated to decomposition it emits toxic fumes of cl- and nox.
user
O=[N+]([O-])c1ccc(N=Nc2c(O)ccc3ccccc23)c(Cl)c1
assistant