Using COCc1nc2c(C(=O)Nc3cccc(Cl)c3C)cc([N+](=O)[O-])cc2[nH]1 to produce COCc1nc2c(C(=O)Nc3cccc(Cl)c3C)cc(N)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.