Using COc1ccc(C(O)Cc2c(Cl)cncc2Cl)c2c1OC(C)(C)C2, C[Si](C)(C)C#N to produce COc1ccc(C(C#N)Cc2c(Cl)cncc2Cl)c2c1OC(C)(C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.