9874
Numerous studies have indicated that the alkyl esters are more effective against tumor cell lines than gallic acid , and that this activity is related to their hydrophobic moiety .
 Chemical: alkyl esters; Chemical: gallic 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: alkyl esters; Chemical: gallic acid