Using O=Cc1[nH]c(-c2ccccc2)nc1Cl, O=[N+]([O-])c1ccc(CBr)cc1 to produce O=Cc1c(Cl)nc(-c2ccccc2)n1Cc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.