Using CCOC(=O)Nc1ccc(N2C(=O)c3ccccc3C2=O)cc1[N+](=O)[O-] to produce CCOC(=O)Nc1ccc(N)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.