Using COC(=O)C(c1ccc(Cl)cc1)n1ccc2c([N+](=O)[O-])cccc2c1=O to produce COC(=O)C(c1ccc(Cl)cc1)n1ccc2c(N)cccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.