Using OB(O)c1ccc2ccccc2c1, Nc1ccc(Br)cc1[N+](=O)[O-] to produce Nc1ccc(-c2ccc3ccccc3c2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.