Using CC(C)[N+](=O)[O-], O=C(C=Cc1cccnc1)c1ccccc1 to produce CC(C)(C(CC(=O)c1ccccc1)c1cccnc1)[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.