1837
The major metabolites detected in plasma were M17 . 3 , M12 . 8 ( acetylated M17 . 3 ) , M22 . 2 , and M41 . 4 ( methylated M17 . 3 ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None