Using O=S(=O)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F, CC1(C)OC2C(O1)C1(C)CC(=O)CC2(C)O1 to produce CC1(C)OC2C(O1)C1(C)CC(OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)=CC2(C)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.