Using [NH4+], COC(=O)c1cc(C(=O)[O-])cc([N+](=O)[O-])c1 to produce NC(=O)c1cc(C(=O)O)cc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.