8130
A series of GPR119 agonists based on a 2 , 6 - diazatricyclo [ 3 . 3 . 1 . 1 ~ 3 , 7 ~ ] decane ring system is described .
 Chemical: 2 , 6 - diazatricyclo [ 3 . 3 . 1 . 1 ~ 3 , 7 ~ ] decane
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: 2 , 6 - diazatricyclo [ 3 . 3 . 1 . 1 ~ 3 , 7 ~ ] decane