11420
Methadone metabolism clinically occurs primarily by N - demethylation to 2 - ethyl - 1 , 5 - dimethyl - 3 , 3 - diphenylpyrrolidine ( EDDP ) , catalyzed predominantly by CYP2B6 .
 Chemical: Methadone; Chemical: N; Chemical: 2 - ethyl - 1 , 5 - dimethyl - 3 , 3 - diphenylpyrrolidine; Chemical: EDDP
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; Chemical: 2 - ethyl - 1 , 5 - dimethyl - 3 , 3 - diphenylpyrrolidine; Chemical: EDDP