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Laninamivir octanoate ( LO ) ( Inavir ; Daiichi Sankyo , Japan ) is an ester prodrug of the neuraminidase inhibitor laninamivir .
 Laninamivir octanoate, Inavir, ester, laninamivir
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Laninamivir octanoate, Inavir, ester, laninamivir