Using Cc1cc(Br)ccc1C(=O)OC(C)(C)C, CC1(C)OB(C=Cc2ccccc2)OC1(C)C to produce C=C(c1ccccc1)c1ccc(C(=O)OC(C)(C)C)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.