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 ) .
 Chemical: 1 - nitro - 2 - phenylethane
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: 1 - nitro - 2 - phenylethane 
Answer:
 Chemical: 1 - nitro - 2 - phenylethane