18932
Within these series of derivatives , compound 17 exhibited the most potent cytotoxicity against PC3 cell line ( IC50 = 0 . 39 mu M ) and compound 28 displayed the best activity against A549 cell line ( IC50 = 0 . 22 mu M ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None