Using COC(=O)C(Oc1ccc(F)cc1F)c1ccc(S(=O)(=O)C2CCOCC2)cc1 to produce O=C(O)C(Oc1ccc(F)cc1F)c1ccc(S(=O)(=O)C2CCOCC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.