18020
Our results suggest the potential use of nicotinamide N - oxide as a biomarker of CYP2E1 activity from urine or blood samples .
 Chemical: nicotinamide N - 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: nicotinamide N - oxide