Using CC(C)C(c1ccc(NC(=O)Cc2ccc(Cl)cc2)c([N+](=O)[O-])c1)n1cncn1 to produce CC(C)C(c1ccc2[nH]c(=O)c(-c3ccc(Cl)cc3)nc2c1)n1cncn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.