Using O=c1cc2nnc(=O)n-2c2ccc([N+](=O)[O-])cc2n1-c1ccccc1 to produce Nc1ccc2c(c1)n(-c1ccccc1)c(=O)cc1nnc(=O)n2-1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.