18580
Development of potent and selective indomethacin analogues for the inhibition of AKR1C3 ( Type 5 17 beta - hydroxysteroid dehydrogenase / prostaglandin F synthase ) in castrate - resistant prostate cancer .
 indomethacin, 17 beta - hydroxysteroid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 indomethacin, 17 beta - hydroxysteroid