Using CC(C)(C)[Si](C)(C)OCc1ccc(CC(C#N)c2ccccc2)cc1, BrC(Br)(Br)Br to produce N#CC(Cc1ccc(CBr)cc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.