Using OB(O)c1cc(F)cc(F)c1, CCc1[nH]c2ccc(F)cc2c(=O)c1I to produce CCc1[nH]c2ccc(F)cc2c(=O)c1-c1cc(F)cc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.