Using CC(C)(C)[Si](Cl)(c1ccccc1)c1ccccc1, OC1Cc2ccc(Br)c3cccc1c23 to produce CC(C)(C)[Si](OC1Cc2ccc(Br)c3cccc1c23)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.