21181
A series of N - [ 9 - ( ortho - fluorobenzyl ) - 2 - phenyl - 8 - azapurin - 6 - yl ] - amides were synthesised and tested for their affinity toward A1 , A2A and A3 adenosine receptor subtypes .
 Chemical: N - [ 9 - ( ortho - fluorobenzyl ) - 2 - phenyl - 8 - azapurin - 6 - yl ] - amides; Chemical: adenosine
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: N - [ 9 - ( ortho - fluorobenzyl ) - 2 - phenyl - 8 - azapurin - 6 - yl ] - amides; Chemical: adenosine