Using COC(=O)c1cc2c(cc1OC(C)=O)CC[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12 to produce COC(=O)c1cc2c(cc1O)CC[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.