15022
Synthesis , quantitative structure - activity relationship and biological evaluation of 1 , 3 , 4 - oxadiazole derivatives possessing diphenylamine moiety as potential anticancer agents .
 Chemical: 1 , 3 , 4 - oxadiazole; Chemical: diphenylamine
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: 1 , 3 , 4 - oxadiazole; Chemical: diphenylamine