Using C[C@H]1Cc2cc(OC3CCCCO3)ccc2[C@H]2CC[C@]3(C)C(=C(F)F)CC[C@H]3[C@@H]21 to produce C[C@H]1Cc2cc(O)ccc2[C@H]2CC[C@]3(C)C(=C(F)F)CC[C@H]3[C@@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.