19778
The known compounds , ursolic acid ( 7 ) and 5 , 7 , 4 ' - trimethoxyflavone ( 14 ) , exhibited weak cytotoxic activity against some cells .
 Chemical: ursolic acid; Chemical: 5 , 7 , 4 ' - trimethoxyflavone
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: 5 , 7 , 4 ' - trimethoxyflavone