Using C=CCCCC(=O)C=C, COC(=O)C1=C(O)C[C@H]2CC[C@@H](OC(C)(C)C)[C@]2(C)C1 to produce C=CCCCC(=O)CCC1(C(=O)OC)C[C@]2(C)[C@H](CC[C@H]2OC(C)(C)C)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.