Using N#CBr, Cc1cc(Br)c(CNCc2cc(C(F)(F)F)cc(C(F)(F)F)c2)cc1C(F)(F)F to produce Cc1cc(Br)c(CN(C#N)Cc2cc(C(F)(F)F)cc(C(F)(F)F)c2)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.