23020
The results indicated that Sch B significantly dose - dependently inhibited rat hepatic microsomal CYP3A activity with Ki value of 16 . 64mg / kg and showed the characteristic of a noncompetitive inhibitor .
 Sch B
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Sch B