Using O=S(=O)(OCCOC(F)(F)F)C(F)(F)F, COC(=O)c1ccc(O)c(OC)c1 to produce COC(=O)c1ccc(OCCOC(F)(F)F)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.