21120
The constitutive active / androstane receptor ( CAR ) regulates hepatic drug metabolism by activating genes such as cytochrome P450 ( CYP ) and certain transferases .
 Chemical: androstane
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: androstane