Using COc1cccc(OC)c1CNC(=O)c1cc(Cl)ccc1[N+](=O)[O-] to produce COc1cccc(OC)c1CNCc1cc(Cl)ccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.