Using OO, C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@@H]43)[C@@H]1CC/C2=C\Cl to produce C[C@]12CC[C@H]3[C@@H](CCC45OC4C(=O)CC[C@H]35)[C@@H]1CC/C2=C\Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.