Using O=C1CCc2cc(/C=C/C(c3cc(Cl)c(F)c(Cl)c3)C(F)(F)F)ccc21, NCCC(F)(F)F to produce Fc1c(Cl)cc(C(/C=C/c2ccc3c(c2)CCC3NCCC(F)(F)F)C(F)(F)F)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.