Is THE ORIGINAL OLD FASHIONED SOUR CREAM CRUMB CAKE vegan?

cake mix (sugar, enriched flour bleached [wheat flour, niacin, iron, thiamin mononitrate, riboflavin, folic acid], soybean oil, food starch-modified, whey, propylene glycol monoesters of fatty acids, mono and diglycerides, leavening [baking soda, sodium aluminum phosphate], vital wheat gluten, salt, sodium stearoyl lactylate, guar gum, xanthan gum, natural and artificial flavor, egg, soy flour), egg, sugar, enriched flour (wheat flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid), unsalted butter (pasteurized cream, natural flavors), sour cream (milk and milk fat, nonfat milk, food starch, gum acacia, guar gum, locust bean gum, carrageenan, whey, lactic acid, citric acid, phosphoric acid), margarine (palm oil, water, soybean oil, salt, natural flavor, soy lecithin, beta carotene color, vitamin a palmitate added), brown sugar (sugar, cane syrups), enriched flour (wheat flour, malted barley flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid), natural flavor, donut sugar (dextrose, food starch-modified, palm oil, titanium dioxide color, hydrogenated cottonseed oil, calcium propionate preservative, corn starch, artificial flavor), glycerin, spice, potassium sorbate preservative, baking powder (sodium acid pyrophosphate, sodium bicarbonate, corn starch, monocalcium phosphate), sodium benzoate preservative, water, soybean oil, soy lecithin, methyl paraben preservative, propyl paraben preservative.

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