Using O=c1oc(Cc2ccc([N+](=O)[O-])cc2)nc2ccccc12, N=C(N)NN to produce Nc1nc2c3ccccc3nc(Cc3ccc([N+](=O)[O-])cc3)n2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.