Using O=[N+]([O-])c1ccc(Oc2ccccc2-c2ccccc2Oc2ccc([N+](=O)[O-])c([N+](=O)[O-])c2)cc1[N+](=O)[O-] to produce Nc1ccc(Oc2ccccc2-c2ccccc2Oc2ccc(N)c(N)c2)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.