Using CC(C)(C)OC(=O)N1CC[C@@H]1COc1cnc(Cl)c(Br)c1, OB(O)c1ccccc1 to produce CC(C)(C)OC(=O)N1CC[C@@H]1COc1cnc(Cl)c(-c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.