Using O=[Mn](=O)(=O)[O-], CC(=O)CCc1ccc2c(c1)Cc1ccccc1-2 to produce CC(=O)CCc1ccc2c(c1)C(=O)c1ccccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.