27902
Two new compounds , 8 - dehydroxymethylvisanol ( 1 ) and 9 - O - [ 3 - O - acetyl - beta - d - glucopyranosyl ] - 4 - hydroxy - cinnamic acid ( 4 ) , together with two known lignans , visanol ( 2 ) and 9 - aldehydevibsanol ( 3 ) , were isolated from the 80 % EtOH extract of Solidago canadensis .
 8 - dehydroxymethylvisanol, 9 - O - [ 3 - O - acetyl - beta - d - glucopyranosyl ] - 4 - hydroxy - cinnamic acid, lignans, visanol, 9 - aldehydevibsanol, EtOH
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 8 - dehydroxymethylvisanol, 9 - O - [ 3 - O - acetyl - beta - d - glucopyranosyl ] - 4 - hydroxy - cinnamic acid, lignans, visanol, 9 - aldehydevibsanol, EtOH