29039
A series of aromatic ring modified praziquantel ( PZQ ) derivatives were prepared and evaluated against juvenile and adult stage of Schistosoma japonicumin .
 praziquantel, PZQ
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 praziquantel, PZQ