14694
We describe the first detailed structure - activity relationship study of small molecules designed to inhibit HIF - 2 alpha - ARNT heterodimerization by binding an internal cavity of the HIF - 2 alpha PAS - B domain .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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