Using O=C1OC(=O)[C@@H]2CCCC[C@H]12, COc1ccc(Br)cc1OC1CCCC1 to produce COc1ccc(C(=O)[C@H]2CCCC[C@H]2C(=O)O)cc1OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.