Using COC(=O)c1cc(Br)nc2c1[nH]c1cc([N+](=O)[O-])ccc12 to produce COC(=O)c1cc(Br)nc2c1[nH]c1cc(N)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.