Using CC(=O)Nc1c(C(=O)c2ccccc2)[nH]c2cc([N+](=O)[O-])ccc12 to produce CC(=O)Nc1c(C(=O)c2ccccc2)[nH]c2cc(N)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.