Using CCOC(=O)C(Cl)C(=O)c1ccccc1, O=C(O)c1ccccc1F to produce CCOC(=O)C(OC(=O)c1ccccc1F)C(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.