3097
Flestolol ( ACC - 9089 ) is a nonselective , competitive , ultra - short - acting beta - adrenergic blocking agent , without any intrinsic sympathomimetic activity .
 Flestolol, ACC - 9089
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Flestolol, ACC - 9089