Using CCOC(=O)CN1CCC(C(=O)c2ccc3c(c2)OCO3)CC1 to produce O=C(O)CN1CCC(C(=O)c2ccc3c(c2)OCO3)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.