Using O=C1CCCc2cc(S(=O)(=O)c3ccccc3)ccc21, C[Si](C)(C)C#N to produce N#CC1=CCCc2cc(S(=O)(=O)c3ccccc3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.