oreo o's w/ marshmallows

Question

is Oreo O's w/ marshmallows kosher? It's ingredients are: corn, oat, and wheat flour; sugar; marshmallow bits (sugar, corn syrup, modified corn starch, dextrose, gelatin, artificial and natural flavor, sodium hexametaphosphate, blue 1); partially hydrogenated soybean oil; cocoa (processed w/ alkali); corn syrup, salt, high fructose corn syrup, modified corn starch, artificial flavor, natural flavor (contains milk and egg), soy lecithin, baking soda, glycerin, artificial color, chocolate, BHT