Using CCOC(=O)C(=O)c1ccc(Nc2ncccc2[N+](=O)[O-])cc1 to produce CCOC(=O)C(=O)c1ccc(Nc2ncccc2N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.