22190
A series of new 2 - pyridyl hexahydrocycloocta [ 4 , 5 ] thieno [ 2 , 3 - d ] pyrimidines with different substituents as C - 4 position was synthesized .
 Chemical: 2 - pyridyl hexahydrocycloocta [ 4 , 5 ] thieno [ 2 , 3 - d ] pyrimidines
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: 2 - pyridyl hexahydrocycloocta [ 4 , 5 ] thieno [ 2 , 3 - d ] pyrimidines 
Answer:
 Chemical: 2 - pyridyl hexahydrocycloocta [ 4 , 5 ] thieno [ 2 , 3 - d ] pyrimidines