Using CC(C)(C)[Si](Cl)(c1ccccc1)c1ccccc1, OCc1cccc(Br)c1 to produce CC(C)(C)[Si](OCc1cccc(Br)c1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.