Using O=C1OC(=Cc2cc([N+](=O)[O-])ccn2)c2ccccc21, NN to produce Nc1ccnc(Cc2n[nH]c(=O)c3ccccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.