10781
Km and Vmax values of entecavir were 250 mu M and 0 . 83 nmol / mg protein / 30s ( OAT1 ) and 23 mu M and 1 . 1 nmol / mg protein / 30 s ( OAT3 ) , respectively .
 Chemical: entecavir
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: entecavir