Using BrCC[C@H]1CC[C@H](Nc2ncccn2)CC1, FC(F)(F)c1cccc(N2CCNCC2)c1 to produce FC(F)(F)c1cccc(N2CCN(CC[C@H]3CC[C@H](Nc4ncccn4)CC3)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.