Using COCCC1CC(c2cccc(Br)c2)C1, C#C[Si](C(C)C)(C(C)C)C(C)C to produce COCCC1CC(c2cccc(C#C[Si](C(C)C)(C(C)C)C(C)C)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.