Using O=C(NCc1ccccc1C(F)(F)F)C1CCNCC1, Clc1nc(Cl)nc(Cl)n1 to produce O=C(NCc1ccccc1C(F)(F)F)C1CCN(c2nc(Cl)nc(Cl)n2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.