Using COC(=O)c1cc(Cl)ccc1OCc1ccccc1, CCOC(=O)COCc1ccccc1 to produce CCOC(=O)C(OCc1ccccc1)C(=O)c1cc(Cl)ccc1OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.