Using Cc1ccc2ncc(O)cc2c1, O=[N+]([O-])c1cc(Cl)c(Cl)c(Cl)c1 to produce Cc1ccc2ncc(Oc3c(Cl)cc([N+](=O)[O-])cc3Cl)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.