Using O=C(Nc1cc(Cl)c([N+](=O)[O-])cc1O)c1ccc(Cl)c(Cl)c1 to produce Nc1cc(O)c(NC(=O)c2ccc(Cl)c(Cl)c2)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.