You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: When heated to decomposition it emits toxic fumes of nitrogen oxides. Please write the SMILES representation of it.
user
O=C([O-])c1ccccc1C(=O)Nc1cccc2ccccc12.[Na+]
assistant