Using Nc1ccc(Cl)nn1, O=C(c1ccccc1C(F)(F)F)N1CCNCC1 to produce Nc1ccc(N2CCN(C(=O)c3ccccc3C(F)(F)F)CC2)nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.