9193
To develop new drugs for treatment of Alzheimer ' s disease , a group of N ' - 2 - ( 4 - Benzylpiperidin - / piperazin - 1 - yl ) acylhydrazones was designed , synthesized and tested for their ability to inhibit acetylcholinesterase , butyrylcholinesterase and aggregation of amyloid beta peptides ( 1 - 40 , 1 - 42 and 1 - 40 _ 1 - 42 ) .
 Chemical: N ' - 2 - ( 4 - Benzylpiperidin - / piperazin - 1 - yl ) acylhydrazones
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: N ' - 2 - ( 4 - Benzylpiperidin - / piperazin - 1 - yl ) acylhydrazones