18000
Moreover , we have found that resveratrol activated the AMP - activated protein kinase , SIRT1 , and mitochondrial transcription factor A ( p < 0 . 05 ) .
 resveratrol, AMP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 resveratrol, AMP