17166
Moreover , only compound 1 exhibited effective inhibitory activity against H1N1 viral neuraminidase ( NA ) , and docking of two isomers ( 1 - 2 ) into the active sites of NA showed that the E double bond Delta ( 5 ( 10 ) ) was essential to achieve activity .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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