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Interestingly , ursolic acid increased the phosphorylation of AMPK and coenzyme A carboxylase and also enhanced phosphorylation of GSK3 beta at inactive form serine 9 , whereas ursolic acid attenuated the phosphorylation of AKT and mTOR in HepG2 cells .
 Chemical: ursolic acid; Chemical: serine; Chemical: ursolic acid
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: ursolic acid; Chemical: serine; Chemical: ursolic acid