13718
Phytochemical investigation of the methanolic extract of Croton tonkinensis afforded two known kauranes ( 1 , 2 ) , eight new ent - kauranes ( 3 - 10 ) , and 16 known ent - kaurane - type diterpenoids ( 12 - 27 ) .
 Chemical: kauranes; Chemical: ent - kauranes; Chemical: ent - kaurane; Chemical: diterpenoids
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: kauranes; Chemical: ent - kauranes; Chemical: ent - kaurane; Chemical: diterpenoids