Using Cl[Si](Cl)(Cl)c1ccccc1, CC(C)(C)c1cc(Br)cc(C(C)(C)C)c1 to produce CC(C)(C)c1cc(C(C)(C)C)cc([Si](Cl)(Cl)c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.