Using CC(C)(C)OC(=O)N1CCN(Cc2ccccc2Br)CC1, OB(O)c1ccc(Cl)cc1 to produce CC(C)(C)OC(=O)N1CCN(Cc2ccccc2-c2ccc(Cl)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.