Using NC(=O)c1ccc(Br)c2c1[nH]c1cc(C=O)ccc12, NO to produce NC(=O)c1ccc(Br)c2c1[nH]c1cc(/C=N/O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.