Using CN(C(=O)OC(C)(C)C)c1ccc(-c2cc(Oc3ccc([N+](=O)[O-])nc3)ccn2)cn1 to produce CN(C(=O)OC(C)(C)C)c1ccc(-c2cc(Oc3ccc(N)nc3)ccn2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.