26054
Prodrugs for PI3K : A series of substituted analogues of the phosphatidylinositol 3 kinase ( PI3K ) inhibitor LY294002 were prepared and found to potently inhibit the isolated enzyme but not MCF7 cell proliferation .
 phosphatidylinositol, LY294002
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 phosphatidylinositol, LY294002