21625
The most potent in vitro DASI discovered is an imidazole derivative with IC50 values against aromatase and steroid sulfatase in a JEG - 3 cell preparation of 0 . 2 and 2 . 5 nM , respectively .
 Chemical: imidazole; Chemical: steroid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: imidazole; Chemical: steroid