Using CN(c1ccc(N)c(N)n1)[C@@H]1CCN(c2ncnc3[nH]ccc23)C1, O=N[O-] to produce CN(c1ccc2nn[nH]c2n1)[C@@H]1CCN(c2ncnc3[nH]ccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.