Using Nc1nc[nH]n1, Fc1ccc(C(F)(F)c2nc(Cl)c3ccccc3n2)nc1 to produce Fc1ccc(C(F)(F)c2nc(Nc3nc[nH]n3)c3ccccc3n2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.