Using O=C1CCC(=O)O1, O=C(OCc1ccccc1)N1CCC(O)CC1 to produce O=C(O)CCC(=O)OC1CCN(C(=O)OCc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.