Using N=C(N)N, Cc1nc(N)c(C#N)nc1-c1cc(C(F)(F)F)cc(C(F)(F)F)c1 to produce Cc1nc2nc(N)nc(N)c2nc1-c1cc(C(F)(F)F)cc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.