Using O=C1c2ccccc2C(=O)N1CCNOCc1ccccc1, O=C(O)CCN1C(=O)c2ccccc2C1=O to produce NCCC(=O)N(CCN)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.