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 nitric oxides. Please write the SMILES representation of it.
user
O=[N+]([O-])c1ccc2c(c1)-c1ccc([N+](=O)[O-])c3cccc-2c13
assistant