Using COC(=O)COC1CCN(Cc2ccccc2)CC1, O=C(O)COC1CCN(Cc2ccccc2)CC1 to produce CCNC(=O)COC1CCN(Cc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.