Using CCOC(=O)C1CC=C(CCCCC(F)(F)C(F)(F)C(F)(F)C(F)(F)F)CC1 to produce O=C(O)C1CC=C(CCCCC(F)(F)C(F)(F)C(F)(F)C(F)(F)F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.