Using CC(C)[C@@H](NC(=O)OC(C)(C)C)C(=O)O[C@H]1CC[C@@]2(C)[C@H](CC[C@@H]3[C@@H]2CC[C@]2(C)[C@@H](c4ccc(=O)oc4)CC[C@]32O)C1 to produce CC(C)[C@@H](N)C(=O)O[C@H]1CC[C@@]2(C)[C@H](CC[C@H]3C4=CC[C@H](c5ccc(=O)oc5)[C@@]4(C)CC[C@@H]32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.