Using CCOC(=O)[C@H](CC)Cc1ccc(Cl)c(NC(=O)[C@H](c2ccc(Cl)cc2)[C@@H](C)C(F)(F)F)c1 to produce CC[C@H](Cc1ccc(Cl)c(NC(=O)[C@H](c2ccc(Cl)cc2)[C@@H](C)C(F)(F)F)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.