Now, let's give an example of the simplest type of glycolipid shown in this diagram. This is known as a cerebral side. So in a cerebral side, the sugar molecule is either glucose or a galactose. The point is, we only have a single sugar moody, a single sugar molecule. The sugar molecule is attached in this carbon position to this oxygen, the primary alcohol of this finocene shown in brown. So this is the primary alcohol group, this is a secondary alcohol group, and it's the primary alcohol that is attached via this glycosytic bond to this sugar molecule.