20785
Three drugs , ibuprofen , aspirin , and erythromycin , are encapsulated in spherical Pluronic F127 micelles .
 ibuprofen, aspirin, erythromycin, Pluronic F127
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ibuprofen, aspirin, erythromycin, Pluronic F127