Using O=[N+]([O-])c1ccc(S)cc1, CNc1nc(Br)cc(Br)n1 to produce CNc1nc(Br)cc(Sc2ccc([N+](=O)[O-])cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.