14610
Methadone N - demethylation in vitro is catalyzed by hepatic cytochrome P4502B6 ( CYP2B6 ) and CYP3A4 , but clinical disposition is often attributed to CYP3A4 .
 Chemical: Methadone; Chemical: N
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: Methadone; Chemical: N