Now let's move on to our sphingolipids. So what's the difference between a phosphorglyceride and a spingolipid? Well, in the case of phosphorglycerides, this component was a glycerol. But in the case of spingolipids, the platform molecule, that backbone is a much more complex alcohol molecule that basically looks like this. So instead of having this three carbon alcohol, we have this more complex alcohol in which we have a primary alcohol, a secondary alcohol, we have this long unsaturated hydrocarbon component that contains this double bond. And we also have this amino group that contains a positive charge.