Using NO, CCOC=C(C(C)=O)C(=O)c1ccc(C(F)(F)F)cc1[N+](=O)[O-] to produce Cc1oncc1C(=O)c1ccc(C(F)(F)F)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.