Using Fc1ccc(F)nn1, FC(F)(F)c1cccc(N2CCNCC2)c1 to produce Fc1ccc(N2CCN(c3cccc(C(F)(F)F)c3)CC2)nn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.