Using CC(C)(C)COS(=O)(=O)c1cccc(Br)c1, CC(C)OB(OC(C)C)OC(C)C to produce CC(C)(C)COS(=O)(=O)c1cccc(B(O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.