Using O=[N+]([O-])c1cccc(Cl)c1Cl, Oc1cc(Cl)cc(Br)c1Cl to produce O=[N+]([O-])c1cccc(Cl)c1Oc1cc(Cl)cc(Br)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.