Using CC1(C)[C@@]2(C)CC[C@]1(C(=O)Nc1ccc(Cl)cc1[C@@](O)(C#CC1CC1)C(F)(F)F)OC2=O to produce Nc1ccc(Cl)cc1[C@@](O)(C#CC1CC1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.