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The methanol extract of the tubers of Polygonum perfoliatum L . afforded a new lignan : 8 - oxo - pinoresinol ( 1 ) , and five known compounds 3 ' , 5 - dihydroxy - 3 , 4 ' , 5 ' , 7 - tetramethoxy - flavone ( 2 ) , catechin ( 3 ) , quercetin ( 4 ) , quercetin - 3 - O - beta - D - glucuronide ( 5 ) and rutin ( 6 ) .
 Chemical: methanol; Chemical: lignan; Chemical: 8 - oxo - pinoresinol; Chemical: 3 ' , 5 - dihydroxy - 3 , 4 ' , 5 ' , 7 - tetramethoxy - flavone; Chemical: catechin; Chemical: quercetin; Chemical: quercetin - 3 - O - beta - D - glucuronide; Chemical: rutin
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: methanol; Chemical: lignan; Chemical: 8 - oxo - pinoresinol; Chemical: 3 ' , 5 - dihydroxy - 3 , 4 ' , 5 ' , 7 - tetramethoxy - flavone; Chemical: catechin; Chemical: quercetin; Chemical: quercetin - 3 - O - beta - D - glucuronide; Chemical: rutin