140
The most abundant contents were 4a alpha , 7 beta , 7a alpha - nepetalactone ( 18 . 10 % ) , germacrene ( 15 . 68 % ) and elemol ( 14 . 38 % ) .
 4a alpha , 7 beta , 7a alpha - nepetalactone, germacrene, elemol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 4a alpha , 7 beta , 7a alpha - nepetalactone, germacrene, elemol