Using COC(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)NC(C(C)C)C(O)C(F)(F)F)C(C)C to produce COC(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)NC(C(=O)C(F)(F)F)C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.