Using CCOC(=O)CCC(C)c1ccc(OCc2ccccc2C(=O)OCC)cc1 to produce CC(CCC(=O)O)c1ccc(OCc2ccccc2C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.