Using CC(=O)O, COc1ccc(C(=O)C=Cc2ccc(O)cc2O)cc1OC to produce COc1ccc(CCC(O)c2ccc(O)cc2O)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.