Using COC(=O)C1CC(=O)CCN1C(=O)OCc1ccccc1, OCCO to produce COC(=O)C1CC2(CCN1C(=O)OCc1ccccc1)OCCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.