Using [NH4+], O=C(Cl)c1cccc(Oc2ccc(Cl)cc2[N+](=O)[O-])c1 to produce NC(=O)c1cccc(Oc2ccc(Cl)cc2[N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.