19243
Furthermore , the metabolic activities for all three compounds in HIC were largely inhibited by menadione , which has been used as a carbonyl reductase ( CBR ) - selective chemical inhibitor .
 menadione, carbonyl
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 menadione, carbonyl