23136
IPI - 926 is both a substrate and inhibitor ( IC50 = 1 . 9 micro M ) of P - glycoprotein .
 Chemical: IPI - 926
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: IPI - 926