20447
Pregna - 5 , 17 ( 20 ) - dien - 21 - oyl amides affecting sterol and triglyceride biosynthesis in Hep G2 cells .
 Pregna - 5 , 17 ( 20 ) - dien - 21 - oyl amides, sterol, triglyceride
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Pregna - 5 , 17 ( 20 ) - dien - 21 - oyl amides, sterol, triglyceride