23231
The least susceptible cvs , above all Percoca Romagnola 7 , contained the higher amounts of hexenyl , hexyl , 3 - methylbutyl , butyl and 2 - methylpropyl esters ; among these , some C6 derivatives detected , such as ( Z ) - 3 - hexenyl acetate , are known to act as priming agents , enhancing plant defence response to insects .
 Chemical: hexenyl , hexyl , 3 - methylbutyl , butyl and 2 - methylpropyl esters; Chemical: ( Z ) - 3 - hexenyl acetate
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: hexenyl , hexyl , 3 - methylbutyl , butyl and 2 - methylpropyl esters; Chemical: ( Z ) - 3 - hexenyl acetate