Using CCOC(C)=O, CC[n+]1c(C)sc2ccc(C(F)(F)F)cc21 to produce CC[n+]1c(C=C2C=C(C)c3ccccc3O2)sc2ccc(C(F)(F)F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.