Using Cc1cc(O)nc(S)n1, O=[N+]([O-])c1ccc(CBr)c(Cl)c1 to produce Cc1cc(O)nc(SCc2ccc([N+](=O)[O-])cc2Cl)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.