Using CC1CSC2=C(O1)c1cc(Br)ccc1C(=O)C2=O, OB(O)c1ccccc1 to produce CC1CSC2=C(O1)c1cc(-c3ccccc3)ccc1C(=O)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.