16124
Plasma samples of 0 . 2 ml were processed by liquid - liquid extraction with n - hexane / ethyl acetate ( 2 : 1 , v / v ) .
 Chemical: n - hexane; Chemical: ethyl 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: n - hexane; Chemical: ethyl acetate