Using OB(O)c1ccccc1Cl, COc1cc(Br)c(C#N)c([N+](=O)[O-])c1 to produce COc1cc(-c2ccccc2Cl)c(C#N)c([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.