Using CC(=O)O[C@@H]1CC2=CC=C3[C@H](CC[C@]4(C)C(=O)CC[C@@H]34)[C@@]2(C)[C@@H](OC(C)=O)C1 to produce C[C@]12C(=CC=C3[C@@H]1CC[C@]1(C)C(=O)CC[C@@H]31)C[C@@H](O)C[C@@H]2O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.