Using CSc1nc(N)nc(Br)c1C#N, Fc1ccc(C2CCNCC2)cc1 to produce CSc1nc(N)nc(N2CCC(c3ccc(F)cc3)CC2)c1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.