Using O=C(O)C(F)(F)S(=O)(=O)F, COC(=O)C1CC(CO)CN1C(=O)OC(C)(C)C to produce COC(=O)C1CC(COC(F)F)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.