Using CS(=O)(=O)c1cc(F)c(F)cc1F, N[C@H]1CCN(C2CCN(C(=O)OCc3ccccc3)CC2)C1=O to produce CS(=O)(=O)c1cc(F)c(N[C@H]2CCN(C3CCN(C(=O)OCc4ccccc4)CC3)C2=O)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.