Using C#C[Si](C)(C)C, CC1(C)CC(C)(C)c2ccc(Br)cc2O1 to produce CC1(C)CC(C)(C)c2ccc(C#C[Si](C)(C)C)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.