Using Clc1ccc(Cl)nc1, FC(F)(F)c1ccnc(N[C@H]2C[C@H]3CNCCN3C2)n1 to produce FC(F)(F)c1ccnc(N[C@H]2C[C@H]3CN(c4ccc(Cl)cn4)CCN3C2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.