Using O=C(O)C(F)(F)S(=O)(=O)F, COC(=O)[C@@H]1C[C@H](CO)CN1C(=O)OC(C)(C)C to produce COC(=O)[C@@H]1C[C@H](COC(F)F)CN1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.