Using CC(=O)O[C@H]1CC[C@H]2[C@@H]3CC=C4N(C)C(=O)CC[C@]4(C)[C@H]3CC[C@]12C to produce CN1C(=O)CC[C@@]2(C)C1=CC[C@H]1[C@@H]3CC[C@H](O)[C@@]3(C)CC[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.