14387
Further studies in Cyp2a5 - null mice indicated that GS - DCBN and its metabolites in nasal - wash fluid were generated in the nasal mucosa , rather than in other organs .
 DCBN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 DCBN