Using CCc1cc(Br)ccc1C1(OC(C)C)CC1, C#C[Si](C)(C)C to produce CCc1cc(C#C[Si](C)(C)C)ccc1C1(OC(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.