17999
Seventeen steviol derivatives , i . e . , 2 - 18 , and 19 isosteviol derivatives , i . e . , 19 - 37 , were prepared from a diterpenoid glycoside , stevioside ( 1 ) .
 Chemical: steviol; Chemical: isosteviol; Chemical: diterpenoid glycoside; Chemical: stevioside
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: steviol; Chemical: isosteviol; Chemical: diterpenoid glycoside; Chemical: stevioside