Using CC(C)(C)[Si](C)(C)Cl, CC(O)c1ncnc2nc[nH]c12 to produce CC(O[Si](C)(C)C(C)(C)C)c1ncnc2nc[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.