24333
CONCLUSIONS : Collectively , the present results suggest that the ethanol extract of Caesalpinia pyramidalis produced dose - related antinociception in several models of pain through mechanisms that involved both glutamatergic system and / or the l - arginine - nitric oxide pathway , supporting the folkloric usage of the plant to treat various painful processes .
 Chemical: ethanol; Chemical: l - arginine - nitric oxide
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ethanol; Chemical: l - arginine - nitric oxide