20209
A phytochemical study of Baeckea frutescens afforded a new biflavonoid named as baeckein E ( 1 ) , along with four known C - methylated flavonols , baeckeins A ( 2 ) and B ( 3 ) , 6 - methylquercetin ( 6 ) and 6 - methylquercetin - 4 ' - O - beta - d - glucopyranoside ( 7 ) , and two known biflavonoids baeckeins C ( 4 ) and D ( 5 ) .
 Chemical: biflavonoid; Chemical: baeckein E; Chemical: C - methylated flavonols; Chemical: baeckeins A; Chemical: 6 - methylquercetin; Chemical: 6 - methylquercetin - 4 ' - O - beta - d - glucopyranoside; Chemical: baeckeins C
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: biflavonoid; Chemical: baeckein E; Chemical: C - methylated flavonols; Chemical: baeckeins A; Chemical: 6 - methylquercetin; Chemical: 6 - methylquercetin - 4 ' - O - beta - d - glucopyranoside; Chemical: baeckeins C