Using NO, CC(C)(C)[Si](C)(C)Oc1ccc(C2CCCCC2=O)c(O[Si](C)(C)C(C)(C)C)c1 to produce CC(C)(C)[Si](C)(C)Oc1ccc(C2CCCCC2=NO)c(O[Si](C)(C)C(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.