Using COC(=O)CC(Nc1ccc([N+](=O)[O-])cc1[N+](=O)[O-])c1ccc(-c2ccccc2)cc1 to produce COC(=O)CC(Nc1ccc([N+](=O)[O-])cc1N)c1ccc(-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.