7623
In this preliminary communication , we report the inhibitory activity of tsitsikammamine derivatives against IDO1 .
 Chemical: tsitsikammamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: tsitsikammamine 
Answer:
 Chemical: tsitsikammamine