Using CO[C@@H]1[C@H](O)CC[C@]2(CO2)[C@H]1[C@@]1(C)O[C@@H]1CC=C(C)C, Cl to produce COC1C(O)CCC(O)(CCl)C1C1(C)OC1CC=C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.