17426
These results provide an example that attachment of a bulky side chain to the C - 7 alpha position of E2 can produce ER antagonists with ER affinity comparable to that of ICI - 182 , 780 .
 Chemical: ICI - 182 , 780
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: ICI - 182 , 780