Using Nc1ccc(S(F)(F)(F)(F)F)cc1, CSc1nc2nc(C)cc(Cl)n2n1 to produce CSc1nc2nc(C)cc(Nc3ccc(S(F)(F)(F)(F)F)cc3)n2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.