Using CC1(N2CCN(S(=O)(=O)c3ccc4c(c3Cl)CCN4C(=O)C(F)(F)F)CC2)CC1 to produce CC1(N2CCN(S(=O)(=O)c3ccc4c(c3Cl)CCN4)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.