5150
Prompted by the high potency of growth inhibition of cancer cells , we investigated the mechanism of action of the anti - proliferative activity of ( 19Z ) - HCA in human A549 lung cancer cells .
 Chemical: ( 19Z ) - HCA
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: ( 19Z ) - HCA