Using COC(=O)c1ccc(O)cn1, O=S(=O)(OCC(F)(F)C(F)F)C(F)(F)F to produce COC(=O)c1ccc(OCC(F)(F)C(F)F)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.