29225
However , no significant change in ketoprofen EF was observed , with influent EFs of 0 . 56 - 0 . 60 ( median 0 . 58 ) and effluent EFs 0 . 54 - 0 . 68 ( median 0 . 56 ) .
 ketoprofen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ketoprofen