Using CC(C)(C)OC(=O)N1CCCC2(C1)C(=O)NCC2c1ccccc1, O=S(=O)(OCC(F)(F)F)C(Cl)(Cl)Cl to produce CC(C)(C)OC(=O)N1CCCC2(C1)C(=O)N(CC(F)(F)F)CC2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.