Using CCOC(=O)CCCNC(=O)N1C[C@@H](CC(C)(C)C)[C@](C#N)(c2ccc(Cl)cc2F)[C@H]1c1cccc(Cl)c1F to produce CC(C)(C)C[C@@H]1CN(C(=O)NCCCC(=O)O)[C@H](c2cccc(Cl)c2F)[C@@]1(C#N)c1ccc(Cl)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.