Using CC(=O)O[C@H]1CC[C@@]2(C)C(=CC[C@H]3[C@@H]4CC[C@H](OC(C)=O)[C@@]4(C(F)F)CC[C@@H]32)C1 to produce C[C@]12CCC(=O)C=C1CC[C@@H]1[C@@H]2CC[C@]2(C(F)F)C(=O)CC[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.