Using COc1ncc(C#N)c2c(C3=CCCC3)cn(COCC[Si](C)(C)C)c12 to produce COc1ncc(C#N)c2c(C3CCCC3)cn(COCC[Si](C)(C)C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.