3712
Furthermore , after additional incubation in drug - free medium , the intracellular laninamivir was released very slowly into the medium with an estimate rate constant of 0 . 0707 h ( - 1 ) , which was regarded as a rate - limiting step in the cellular retention .
 laninamivir
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 laninamivir