Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           chemical substances
             chemical compounds
               Class "lipids"
                 Class glycolipids
                   Class glycosphingolipids
                     acidic glycosphingolipids
                       1 Class gangliosides
                       1 Class sialoglycosphingolipids
                       2 Class glycuronoglycosphingolipids
                       2 Class uronoglycosphingolipids
                       3 Class sulfatoglycosphingolipids
                       3 Class sulfoglycosphingolipids
                       4 Class phosphoglycosphingolipids
                       5 Class phosphonoglycosphingolipids