25649
From VFT fits , the glass transition temperature ( Tg ) was estimated as 267 . 07K , and a fragility or steepness index m = 86 . 57 was calculated , showing that ketoprofen is a fragile glass former .
 ketoprofen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ketoprofen