Using COc1cc2[nH]nc(C(=O)NN)c2cc1OC, O=C([O-])CC(CC(=O)[O-])c1ccc([N+](=O)[O-])o1 to produce COc1cc2[nH]nc(C(=O)NN=Cc3ccc([N+](=O)[O-])o3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.