15928
In addition , a facile synthesis of aza - BODIPY has been developed , which might further expand the applications of this dye .
 Chemical: aza - BODIPY
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: aza - BODIPY