Using CCCS(=O)(=O)Cl, Nc1ccc(N2CCN(C(=O)c3ccccc3C(F)(F)F)CC2)nn1 to produce CCCS(=O)(=O)Nc1ccc(N2CCN(C(=O)c3ccccc3C(F)(F)F)CC2)nn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.