Using CC(=O)OC(C1C(C(=O)OCc2cccc(Oc3ccccc3)c2)C1(C)C)C(Cl)(Cl)C(F)(F)F to produce CC1(C)C(C=C(Cl)C(F)(F)F)C1C(=O)OCc1cccc(Oc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.