Using CCOC(=O)CCC(C(=O)OCC)(C(=O)OCC)c1ccccc1 to produce CCOC(=O)C(CCC(=O)O)(C(=O)OCC)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.