29840
Synthesis and Characterization of 5 - ( 1 , 2 , 4 - Triazol - 3 - yl ) tetrazoles with various energetic functionalities .
 5 - ( 1 , 2 , 4 - Triazol - 3 - yl ) tetrazoles
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 5 - ( 1 , 2 , 4 - Triazol - 3 - yl ) tetrazoles