Using COC(OC)OC, N#CC1(c2ccc(OC(F)F)c(OC(F)F)c2)CCC(=O)CC1 to produce COC1(OC)CCC(C#N)(c2ccc(OC(F)F)c(OC(F)F)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.