Using COB(OC)OC, CCCCCCC(C)(C)c1cc(OC)c(Br)c(OC)c1 to produce CCCCCCC(C)(C)c1cc(OC)c(B(O)O)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.