Using CC1(C)CC(=C(c2ccccc2)c2ccc(Br)cc2)CC(C)(C)C1, Cn1cc(B2OC(C)(C)C(C)(C)O2)cn1 to produce Cn1cc(-c2ccc(C(=C3CC(C)(C)CC(C)(C)C3)c3ccccc3)cc2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.