Using Nc1ccc2nc(-c3ccccc3)cc(N)c2c1, Nc1nc(Cl)cc(-c2ccc(F)cc2)n1 to produce Nc1nc(Nc2ccc3nc(-c4ccccc4)cc(N)c3c2)cc(-c2ccc(F)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.