10074
The discovered synthetic route to introduce three different substituents independently paves the way for versatile applications of the 7 - azaindole core .
 Chemical: 7 - azaindole
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 - azaindole