Using C[C@@](O)(C(=O)O)C(F)(F)F, CSc1ccc(Sc2ccc3c(c2)CCN3)cc1 to produce CSc1ccc(Sc2ccc3c(c2)CCN3C(=O)[C@@](C)(O)C(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.