14170
From an extract of the aerial parts of Dracocephalum ruyschiana , five new flavone tetraglycosides , five new benzyl alcohol glycosides , and 19 known compounds were isolated .
 flavone tetraglycosides, benzyl alcohol glycosides
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 flavone tetraglycosides, benzyl alcohol glycosides