Using OO, C=C1C[C@@H]2[C@H](CC[C@]3(C)C(=O)CC[C@@H]23)[C@@]2(C)CCC(=O)C=C12 to produce C=C1C[C@H]2[C@@H]3CCC(=O)[C@@]3(C)CC[C@@H]2[C@@]2(C)CCC(=O)C3OC132, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.