20162
Serum free fatty acid levels in PCOS patients treated with glucophage , magnesium oxide and spironolactone .
 fatty acid, magnesium oxide, spironolactone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 fatty acid, magnesium oxide, spironolactone