Using O, O=C1CC(c2ccc3c(c2)OCO3)CC(=O)C1=C(C=Cc1ccc2c(c1)OCO2)N1CCOCC1 to produce O=C(CCc1ccc2c(c1)OCO2)C1C(=O)CC(c2ccc3c(c2)OCO3)CC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.