11911
Vasorelaxant effects of 1 - nitro - 2 - phenylethane , the main constituent of the essential oil of Aniba canelilla , in superior mesenteric arteries from spontaneously hypertensive rats .
 1 - nitro - 2 - phenylethane
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 1 - nitro - 2 - phenylethane