19968
Substituted 7 - Amino - 5 - thio - thiazolo [ 4 , 5 - d ] pyrimidines as Potent and Selective Antagonists of the Fractalkine Receptor ( CX3CR1 ) .
 Chemical: 7 - Amino - 5 - thio - thiazolo [ 4 , 5 - d ] pyrimidines
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: 7 - Amino - 5 - thio - thiazolo [ 4 , 5 - d ] pyrimidines