Using [O-][I+3]([O-])([O-])[O-], C=CCC(C(=O)CC)(c1ccccc1)c1ccccc1 to produce CCC(=O)C(CC=O)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.