22078
However , at saturation the elasticity was still higher than that in the absence of the edge activator and ketoprofen , except for ketoprofen loaded liposomes with Span 80 .
 ketoprofen, ketoprofen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ketoprofen, ketoprofen