Using CC1(C)C(=O)Nc2cc(NC(=O)c3ccccc3)c([N+](=O)[O-])cc21 to produce CC1(C)C(=O)Nc2cc3[nH]c(-c4ccccc4)nc3cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.