Using OB(O)c1ccc(C(F)(F)F)cc1, CCCCC(=O)c1ccc(C)cc1 to produce CCCCC(=O)c1ccc(-c2ccc(C(F)(F)F)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.