11912
The present study investigated the mechanisms underlying the vasorelaxant effects of the essential oil of Aniba canelilla ( EOAC ) and its main constituent 1 - nitro - 2 - phenylethane ( NP ) in isolated superior mesenteric artery from spontaneously hypertensive rats ( SHRs ) .
 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