9039
So it can be concluded that tea seed especially the compound 1 ( theasaponin E1 ) could be used as an antitumor agent and a chemoprevention agent of cancer .
 Chemical: theasaponin E1
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: theasaponin E1