21090
A series of adamantane and nor - adamantane based HDAC inhibitors were designed , synthesized and screened for the inhibitory activity of HDAC .
 Chemical: adamantane; Chemical: adamantane
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: adamantane; Chemical: adamantane