992
Of triterpenoids examined , feroniellides D and E revealed anticancer activity against KB and HeLa cells with IC50 values in range of 3 . 4 - 14 . 2 micro g mL ( - 1 ) , which are significantly more potent than feroniellides A - C ( IC50 25 . 5 - 60 . 0 micro g mL ( - 1 ) ) .
 Chemical: triterpenoids; Chemical: feroniellides D and E; Chemical: feroniellides A - C
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: triterpenoids; Chemical: feroniellides D and E; Chemical: feroniellides A - C