Using CCOC(=O)C(CC(C)C)c1cc(Br)c(O)c([N+](=O)[O-])c1 to produce CCOC(=O)C(CC(C)C)c1cc(N)c(O)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.