Using CCCCCCC[C@H]1CO[C@H](c2ccc(C(=O)OC)cc2)OC1 to produce CCCCCCC[C@H]1CO[C@H](c2ccc(C(=O)O)cc2)OC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.