Using COC(=O)c1cc(Cl)c(NC(C)=O)c([N+](=O)[O-])c1O to produce COC(=O)c1cc(Cl)c(N)c([N+](=O)[O-])c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.