You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
When heated to decomposition it emits toxic fumes of nitrogen oxides. Use the above information to create a molecule.
user
Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1[O-].Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1[O-].Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1[O-].Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1[O-].[Zr+4]
assistant