Using COC(=O)CC(C)(c1ccc(O)c(C(C)(C)C)c1)c1ccc(O)c(C(C)(C)C)c1 to produce CC(C)(C)c1cc(C(C)(CC(=O)O)c2ccc(O)c(C(C)(C)C)c2)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.