15561
Bisphenol A ( BPA ) and diethylstilbestrol ( DES ) are endocrine - disrupting chemicals that interact with the human pregnane X receptor ( PXR ) .
 Bisphenol A, BPA, diethylstilbestrol, DES
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Bisphenol A, BPA, diethylstilbestrol, DES