21349
Administration of 1 - azidoanthracene to albino stage 40 - 47 tadpoles was found to immobilize animals upon near - UV irradiation of the forebrain region .
 Chemical: 1 - azidoanthracene
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: 1 - azidoanthracene