Using C[C@H](c1ccccc1)N1CC[C@H](NC(=O)OC(C)(C)C)C[C@H]1C(F)(F)F to produce CC(C)(C)OC(=O)N[C@H]1CCN[C@H](C(F)(F)F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.