7099
Among them , only CK was found to phosphorylate tenofovir monophosphate with a reasonable rate ( about 45 - fold lower than with its natural substrate , ADP ) , while PK exhibits even lower , but still detectable activity ( about 1000 - fold lower compared to the value with ADP ) .
 tenofovir monophosphate, ADP, ADP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 tenofovir monophosphate, ADP, ADP