Using COC(=O)C(=O)c1ccc(OCCN2CCOCC2)c2ccccc12 to produce COC(=O)C(O)c1ccc(OCCN2CCOCC2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.