Using O=C1CCOCC1, COC(=O)C(CO)NC(=O)OCc1ccccc1 to produce COC(=O)C1COC2(CCOCC2)N1C(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.