Using CCOC(=O)C(F)(F)F, CC(=O)c1ccc(OCc2ccccc2)cc1 to produce O=C(CC(=O)C(F)(F)F)c1ccc(OCc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.