Using [NH4+], N#Cc1nn(CCC(F)(F)C(F)(F)F)c2ncccc12 to produce N=C(N)c1nn(CCC(F)(F)C(F)(F)F)c2ncccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.