17563
Betulinic acid ( BA ) , a natural pentacyclic triterpenoid , was isolated from sour jujube fruits for the first time .
 Chemical: Betulinic acid; Chemical: pentacyclic triterpenoid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Betulinic acid; Chemical: pentacyclic triterpenoid