8633
In order to understand why and how a zwitterion solute ( HEPES ) induced phase separation of the investigated systems , molecular dynamics ( MD ) simulation studies are performed for HEPES + water + THF system .
 Chemical: HEPES; Chemical: HEPES; Chemical: THF
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: HEPES; Chemical: HEPES; Chemical: THF