53063
Bortezomib is Pyz–Phe–boroLeu , and MG132 is Z–Leu–Leu–Leu–al .
 Pyz–Phe–boroLeu
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pyz–Phe–boroLeu