2670
The activities of eight cytosolic carbonyl reducing enzymes - - CBR1 , CBR3 , AKR1B1 , AKR1B10 , AKR1C1 - 4 - - toward nabumetone were tested .
 Chemical: carbonyl; Chemical: nabumetone
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: carbonyl; Chemical: nabumetone