Using O=C(OCc1ccccc1)c1ccc(O)cc1, CCOC(=O)C1CCC(O)CC1 to produce CCOC(=O)C1CCC(Oc2ccc(C(=O)OCc3ccccc3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.