Using CO[C@H]1[C@H](OCc2ccccc2)COC(OC(C)=O)[C@@H]1OCc1ccccc1, C[Si](C)(C)C#N to produce CO[C@H]1[C@H](OCc2ccccc2)COC(C#N)[C@@H]1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.