1.14.18.11 24-epi-campesterol, fucosterol, and clionasterol biosynthesis (diatoms) - - 1.14.18.11 Biosynthesis of secondary metabolites - 01110 1.14.18.11 Metabolic pathways - 01100 1.14.18.11 phytosterol biosynthesis (plants) - - 1.14.18.11 Steroid biosynthesis - 00100