Quaker Oats sells this type of cereal under the name "Oatmeal Squares" and other brands use similar sounding names. The amount of antioxidants in this product is almost identical to a Cheerios (and equivalents) which also consist of oats as their primary ingredient.
ORAC Source
USDA Database for the Oxygen Radical Absorbance Capacity (ORAC) of Selected Foods, Release 2 - Prepared by Nutrient Data Laboratory, Beltsville Human Nutrition Research Center (BHNRC), Agricultural Research Service (ARS), U.S. Department of Agriculture (USDA) - May 2010