8207
A new phenanthrenequinone , named denbinobin B ( 1 ) , together with three known phenanthrenes was isolated from the whole plant of Dendrobium sinense T .
 phenanthrenequinone, denbinobin B, phenanthrenes
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 phenanthrenequinone, denbinobin B, phenanthrenes