You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: When heated to decomposition it emits toxic fumes of nitrogen oxides.
user
CC1CC2(OC2C)C(=O)OC2CCN3CC=C(COC(=O)C1(C)O)C23
assistant