5436
The cocktail strategy ( in situ incubation ) was used to assess the induction of CYP1A2 , CYP2B6 , CYP2C9 and CYP3A4 by using the recommended probe substrate , i . e . phenacetin , bupropion , diclofenac and midazolam , respectively .
 phenacetin, bupropion, diclofenac, midazolam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 phenacetin, bupropion, diclofenac, midazolam