Using O=[Mn](=O)(=O)[O-], COc1ccc(C=O)cc1OC(=O)c1ccccc1 to produce COc1ccc(C(=O)O)cc1OC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.