Using COC(=O)c1cnc(N2CCc3[nH]c4ccc([N+](=O)[O-])cc4c3C2)nc1 to produce COC(=O)c1cnc(N2CCc3[nH]c4ccc(N)cc4c3C2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.