Using O=C1c2[nH]c3ccc([N+](=O)[O-])cc3c(=O)c2C(=O)N1Nc1ccccc1 to produce O=c1c2cc([N+](=O)[O-])ccc2[nH]c2c(O)nn(-c3ccccc3)c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.