Using COC(=O)C(C)(C)Oc1ccc(C23CC4CC(CC(C4)C2)C3)cc1 to produce CC(C)(Oc1ccc(C23CC4CC(CC(C4)C2)C3)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.