Using O=c1c2c[nH]c3ccccc3c-2nn1-c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(-n2nc3c4ccccc4[nH]cc-3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.