Using OB(O)c1ccccc1F, OC[C@@H](O)[C@H](c1cccc(F)c1)n1cc(I)c2ccccc21 to produce OC[C@@H](O)[C@H](c1cccc(F)c1)n1cc(-c2ccccc2F)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.