25500
Separation and purification of the antioxidant compounds , caffeic acid phenethyl ester and caffeic acid from mushrooms by molecularly imprinted polymer .
 caffeic acid phenethyl ester, caffeic acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 caffeic acid phenethyl ester, caffeic acid