21596
Bioassay - guided fractionation of the leaves of Eugenia rigida yielded three stilbenes , ( Z ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene ( 1 ) , ( E ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene ( 2 ) , and ( E ) - 3 , 5 , 4 ' - trimethoxystilbene ( 3 ) .
 Chemical: stilbenes; Chemical: ( Z ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene; Chemical: ( E ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene; Chemical: ( E ) - 3 , 5 , 4 ' - trimethoxystilbene
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: stilbenes; Chemical: ( Z ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene; Chemical: ( E ) - 3 , 4 , 3 ' , 5 ' - tetramethoxystilbene; Chemical: ( E ) - 3 , 5 , 4 ' - trimethoxystilbene