Using CC(=O)NC1CCc2cc(SC(C)(C)C(=O)OC(C)(C)C)c(Br)cc2C1, OB(O)c1ccccc1 to produce CC(=O)NC1CCc2cc(SC(C)(C)C(=O)OC(C)(C)C)c(-c3ccccc3)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.