Using C[C@H]1CNC(=O)[C@@H](C)N(C(=O)C[C@@H](Cc2cc(F)c(F)cc2F)NC(=O)OC(C)(C)C)C1 to produce C[C@H]1CNC(=O)[C@@H](C)N(C(=O)C[C@H](N)Cc2cc(F)c(F)cc2F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.