Using CC(C)(C)[Si](C)(C)OCC(O)Cn1cc([N+](=O)[O-])nc1[N+](=O)[O-] to produce CC(C)(C)[Si](C)(C)OCC1Cn2cc([N+](=O)[O-])nc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.