28699
Mass spectral fragmentation and NMR analysis indicated that the site of attachment of the glutathionyl moiety in the thiol conjugates was on the thiazole ring within the bicycle .
 glutathionyl, thiol, thiazole
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 glutathionyl, thiol, thiazole