12584
Antiproliferative activity of twenty - nine ( E ) - 4 - aryl - 4 - oxo - 2 - butenoic acid amides against three human tumor cell lines ( HeLa , FemX , and K562 ) is reported .
 Chemical: ( E ) - 4 - aryl - 4 - oxo - 2 - butenoic acid amides
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: ( E ) - 4 - aryl - 4 - oxo - 2 - butenoic acid amides