5750
Some novel alpha and beta ionone based chalcones and their dihydropyrazolidines / pyrazolidines have been synthesized and evaluated for their in vitro and in vivo antileishmanial activities against Leishmania donovani .
 Chemical: alpha and beta ionone; Chemical: chalcones; Chemical: dihydropyrazolidines; Chemical: pyrazolidines
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: alpha and beta ionone; Chemical: chalcones; Chemical: dihydropyrazolidines; Chemical: pyrazolidines