18688
Compound 1 possessed a bicyclic furanosesquiterpene structure with six - and eight - membered rings , whereas compounds 2 and 3 had an alpha , beta - unsaturated - gamma - lactone ring instead of the furan ring in 1 .
 Chemical: bicyclic furanosesquiterpene; Chemical: alpha , beta - unsaturated - gamma - lactone; Chemical: furan
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: bicyclic furanosesquiterpene, alpha , beta - unsaturated - gamma - lactone, furan 
Answer:
 Chemical: bicyclic furanosesquiterpene; Chemical: alpha , beta - unsaturated - gamma - lactone; Chemical: furan