Using COc1cc(B2OC(C)(C)C(C)(C)O2)ccc1Oc1ccccc1 to produce CC1(C)OB(c2ccc(Oc3ccccc3)c(O)c2)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.