Using O=[Mn](=O)(=O)[O-], COc1cc(OC)nc(Oc2ccc3scc(C)c3c2C=O)n1 to produce COc1cc(OC)nc(Oc2ccc3scc(C)c3c2C(=O)O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.