Using C[C@@H]1CCN(C(=O)C[C@@H](Cc2cc(F)c(F)cc2F)NC(=O)OC(C)(C)C)[C@H](C)C(=O)N1 to produce C[C@@H]1CCN(C(=O)C[C@H](N)Cc2cc(F)c(F)cc2F)[C@H](C)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.