Using O=C(NCCc1ccc(Cl)cc1)c1cc([N+](=O)[O-])[nH]n1 to produce Nc1cc(C(=O)NCCc2ccc(Cl)cc2)n[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.