Using CC(=O)Nc1ccc(S(=O)[O-])cc1, O=[N+]([O-])c1cc(Br)nc(Br)c1 to produce CC(=O)Nc1ccc(S(=O)(=O)c2cc(Br)nc(Br)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.