Using CC(C)(C)[Si](C)(C)Cl, CC(O)C(Cc1ccc(Cl)cc1)c1ccc(Br)cc1 to produce CC(O[Si](C)(C)C(C)(C)C)C(Cc1ccc(Cl)cc1)c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.