Using CC(=O)O[C@@H]1CC[C@@H]2CC[C@@H]3[C@H](CC[C@]4(C)C(=O)[C@@H](N5CCCCC5)C[C@@H]34)[C@@]2(C)C1 to produce CC(=O)O[C@@H]1CC[C@@H]2CC[C@@H]3[C@H](CC[C@]4(C)[C@@H](O)[C@@H](N5CCCCC5)C[C@@H]34)[C@@]2(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.