Using CC(C)c1cc(B2OC(C)(C)C(C)(C)O2)ccc1OCC(=O)OCc1ccccc1 to produce CC(C)c1cc(B2OC(C)(C)C(C)(C)O2)ccc1OCC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.