Using Cc1cccnc1N, O=C(O)C1CCN(C(=O)OCc2ccccc2)CC1 to produce Cc1cccnc1NC(=O)C1CCN(C(=O)OCc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.