1753
In blocking the positive inotropic and chronotropic responses to isoprenaline , ( + ) - propranolol had less than one hundredth the potency of ( - ) - propranolol .
 Chemical: isoprenaline; 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: isoprenaline; Chemical: propranolol; Chemical: propranolol