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