(e) Cerebroside does not contain lecithin.
The structures of these compounds are:
(a) Phosphatidic acid
In structures (a), (b), (c), and (d), you can see the characteristic
ROCH₂-CHOR-CH₂OR glycerol backbone.
In (e), this structure is missing.
Cerebrosides are based on sphingosine instead of glycerol.