Using COC(=O)COc1ccccc1CCl, COC(=O)CCCOc1cc(O)ccc1C=O to produce COC(=O)CCCOc1cc(OCc2ccccc2OCC(=O)OC)ccc1C=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.