19394
Oxysterols are the products of cholesterol oxidation , formed by both enzymatic and non - enzymatic mechanisms .
 Chemical: Oxysterols; Chemical: cholesterol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Oxysterols; Chemical: cholesterol