Using CC1(C)CC(=O)c2ccc(OS(=O)(=O)C(F)(F)F)cc21, OB(O)c1ccc(Cl)cc1 to produce CC1(C)CC(=O)c2ccc(-c3ccc(Cl)cc3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.