12980
A covalent probe , 8 ( CNX - 1220 ) , which selectively bonds to PI3K alpha , was used to investigate the duration of occupancy of 3 with PI3K alpha in vivo .
 Chemical: CNX - 1220
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: CNX - 1220