19775
Two new tirucallane triterpenoids , aquilacallanes A - B ( 1 - 2 ) , together with 15 known compounds ( 3 - 17 ) were isolated from the leaves of Aquilaria sinensis .
 Chemical: tirucallane triterpenoids; Chemical: aquilacallanes A - B
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: tirucallane triterpenoids; Chemical: aquilacallanes A - B