Using CCC=O, CCCCCc1ccc(-c2ccc(-c3cccc(F)c3F)cc2)cc1 to produce CCCCCc1ccc(-c2ccc(-c3ccc(C(O)CC)c(F)c3F)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.