Using CCc1cccc(C2(O)C3CC4CC(C3)CC2C4)c1, C[Si](C)(C)C#N to produce CCc1cccc(C2(C#N)C3CC4CC(C3)CC2C4)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.