Using BrC(Br)(Br)Br, CC(=O)N=S(=O)(CCO)c1ccc(C(=O)Nc2ccc(Cl)cc2C(=O)Nc2ccc(Cl)cn2)cc1 to produce CC(=O)N=S(=O)(CCBr)c1ccc(C(=O)Nc2ccc(Cl)cc2C(=O)Nc2ccc(Cl)cn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.