Using CC(=O)Nc1ccc(Sc2nc(Nc3cc(C)n[nH]3)c3ccc([N+](=O)[O-])cc3n2)cc1 to produce CC(=O)Nc1ccc(Sc2nc(Nc3cc(C)n[nH]3)c3ccc(NO)cc3n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.