20217
Potential anti - ulcer activity of chebulinic acid was observed against CRU ( 62 . 9 % ) , AS ( 55 . 3 % ) , AL ( 80 . 67 % ) and PL ( 66 . 63 % ) induced ulcer models .
 chebulinic acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 chebulinic acid