Using COC(=O)[C@H](CC(C)C)NC(=O)C[C@H](O)C[C@H](O)C=CC(=C(c1ccc(F)cc1)c1ccc(F)cc1)c1nnnn1C to produce CC(C)C[C@H](NC(=O)C[C@H](O)C[C@H](O)C=CC(=C(c1ccc(F)cc1)c1ccc(F)cc1)c1nnnn1C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.