Using CCOC(=O)CCC(=O)c1ccc(OCc2cc(F)ccc2F)cc1 to produce O=C(O)CCC(=O)c1ccc(OCc2cc(F)ccc2F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.