Using BrC(Br)(Br)Br, CC(C)Cc1cc(-c2ccc(CO)cc2)c(S(=O)(=O)NC(C)(C)C)s1 to produce CC(C)Cc1cc(-c2ccc(CBr)cc2)c(S(=O)(=O)NC(C)(C)C)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.