3524
We compared the potential beta - receptor blocker , B 24 / 76 i . e . 1 - ( 2 , 4 - dichlorophenoxy ) - 3 [ 2 - 3 , 4 - dimethoxyphenyl ) ethanolamino ] - prop an - 2 - ol , which is characterized by beta 1 - adrenoceptor blocking and beta 2 - adrenoceptor stimulating properties with propranolol .
 Chemical: propranolol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: propranolol