Is not a simple sugar

A simple sugar, or monosaccharide, is a basic carbohydrate unit, such as glucose or fructose. Compounds like disaccharides (e.g., sucrose and lactose) and polysaccharides (like starch and cellulose) are not simple sugars, as they consist of multiple sugar units linked together. These complex carbohydrates play different roles in energy storage and structural functions in living organisms.