Using C=C1CC(=O)OC1=O, OCCC(F)(F)C(F)(F)C(F)(F)C(F)(F)F to produce C=C(CC(=O)OCCC(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C(=O)OCCC(F)(F)C(F)(F)C(F)(F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.