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