Using CCOC(=O)C[N+](=O)[O-], Cc1cc(Br)ccc1N=C=O to produce CCOC(=O)C(C(=O)Nc1ccc(Br)cc1C)[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.