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