1764
The dose of ( - ) - propranolol was significantly smaller than that of ( + ) - propranolol in both species but much higher than that required to produce evidence of beta - blockade . 8 .
 Chemical: 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; Chemical: propranolol