Using O=C1CCC(=O)N1Br, Cc1ccc(S(=O)CC(C)(C(F)(F)F)C(F)(F)F)cc1 to produce CC(CS(=O)c1ccc(CBr)cc1)(C(F)(F)F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.