10430
These products exhibited substantial activity against T . cruzi , especially 2 - ( ( 8E , 11Z ) - heptadeca - 8 , 11 - dienyl ) - 3 - hydroxynaphthalene - 1 , 4 - dione ( 9 ) with IC ( 50 ) of 7 . 8 mu M .
 Chemical: 2 - ( ( 8E , 11Z ) - heptadeca - 8 , 11 - dienyl ) - 3 - hydroxynaphthalene - 1 , 4 - dione
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: 2 - ( ( 8E , 11Z ) - heptadeca - 8 , 11 - dienyl ) - 3 - hydroxynaphthalene - 1 , 4 - dione