12732
Design , synthesis , in vitro MAO - B inhibitory evaluation , and computational studies of some 6 - nitrobenzothiazole - derived semicarbazones .
 Chemical: 6 - nitrobenzothiazole; Chemical: semicarbazones
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: 6 - nitrobenzothiazole; Chemical: semicarbazones