Using CCOP(=O)(OCC)C(F)F, C[C@]12CC[C@]3(C=O)c4ccc(O)cc4CC[C@H]3[C@@H]1C[C@@H](O)C2 to produce C[C@]12CC[C@]3(C=C(F)F)c4ccc(O)cc4CC[C@H]3[C@@H]1C[C@@H](O)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.