Using Oc1cc(Cl)c(OC(F)(F)C(F)F)c(Cl)c1, ClCC=C(Cl)Cl to produce FC(F)C(F)(F)Oc1c(Cl)cc(OCC=C(Cl)Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.