26203
The ground roots were extracted with aqueous methanol and partitioned sequentially with n - hexane , chloroform and butanol .
 methanol, n - hexane, chloroform, butanol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 methanol, n - hexane, chloroform, butanol