21971
We have designed and evaluated a series of hydroxamate based inhibitors which explore the SAR of substitutions directed into the UDP pocket with a range of substituted alpha - amino acid based linkers .
 hydroxamate, UDP, alpha - amino acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 hydroxamate, UDP, alpha - amino acid