Using Nc1ccc(Cl)cc1-c1cc(Cl)ncn1, NCc1cccc(C(F)(F)F)c1 to produce Nc1ccc(Cl)cc1-c1cc(NCc2cccc(C(F)(F)F)c2)ncn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.