Using COc1cc2ncnc(N3CCN(C(=O)Nc4ccc([N+](=O)[O-])cc4)CC3)c2cc1OC to produce COc1cc2ncnc(N3CCN(C(=O)Nc4ccc(N)cc4)CC3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.