2544
For the quantitative estimation of triterpenic acids in the crude extracts an NMR based methodology was used and compared with the HPLC measurements , both applied for the first time , for the case of betulinic acid .
 Chemical: triterpenic acids; Chemical: betulinic acid
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: triterpenic acids; Chemical: betulinic acid