18706
Interaction of 17 beta - estradiol and ketoconazole on endocrine function in goldfish ( Carassius auratus ) .
 17 beta - estradiol, ketoconazole
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 17 beta - estradiol, ketoconazole