Using O=C(Nc1cc(Cl)ccc1[N+](=O)[O-])c1cc([N+](=O)[O-])ccc1Cl to produce Nc1ccc(Cl)c(-c2nc3cc(Cl)ccc3[nH]2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.