Using CC(C)(C)c1cc(CCC(=O)Nc2ccc(S(=O)(=O)Cl)cc2)cc(C(C)(C)C)c1O, NCCBr to produce CC(C)(C)c1cc(CCC(=O)Nc2ccc(S(=O)(=O)NCCBr)cc2)cc(C(C)(C)C)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.