29227
Naproxen EF was consistently measured at 0 . 99 in the influent and ranged from 0 . 86 to 0 . 94 ( median 0 . 91 ) in the effluent .
 Naproxen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Naproxen