Using COC(=O)CCc1ccc(C(O)(C(F)(F)F)C(F)(F)F)cc1S(=O)(=O)Cl to produce COC(=O)CCc1ccc(C(O)(C(F)(F)F)C(F)(F)F)cc1S, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.