Is Yellow Cake with Caramel Icing Soy Free?

Ingredients

CAKE (SUGAR, ENRICHED BLEACHED FLOUR (BLEACHED WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, SOYBEAN OIL, EGGS, EGG WHITES, MODIFIED CORN STARCH. CONTAINS 2% OR LESS OF NONFAT MILK, SALT, LEAVENING (SODIUM ACID PYROPHOSPHATE, BAKING SODA, MONOCALCIUM PHOSPHATE), VITAL WHEAT GLUTEN, EMULSIFIERS (SORBITAN MONOSTEARATE, MONO - AND DIGLYCERIDES, POLYSORBATE 60, SODIUM STEAROYL LACTYLATE, SOY LECITHIN), ARTIFICIAL AND NATURAL FLAVORS, B-CAROTENE (FOR SHORTENING (INTERESTERIFIED SOYBEAN OIL, SOYBEAN OIL, HYDROGENATED COLOR), DEXTROSE, MALTODEXTRIN, GUM ACACIA), CARAMEL ICING (SUGAR, VEGETABLE SHORTENING (INTERESTERIFIED SOYBEAN OIL, HYDROGENATED COTTONSEED OIL, MONO - AND DIGLYCERIDES, POLYSORBATE 60), WATER, CORN SYRUP, CONTAINS 2% OR LESS OF: SALT, NATURAL FLAVOR, EMULSIFIERS (SODIUM STEAROYL LACTYLATE, SORBITAN MONOSTEARATE, MONO - AND DIGLYCERIDES, POLYSORBATE 60), CARAMEL COLOR, MALTODEXTRIN, GUM ACACIA, TRIACETIN), GARNISH (SUGAR, BROWN SUGAR, CORN SYRUP, CORN CEREAL, CORN STARCH, PALM OIL, NATURAL AND ARTIFICIAL FLAVOR, CARAMEL COLOR).