20018
The 4 - nitrophenyl linked 3 , 3 ' - diindolylmethane 8g was found to be the most potent antileishmanial analog showing IC50 values of 7 . 88 and 8 . 37 mu M against both L . donovani promastigotes and amastigotes , respectively .
 Chemical: 4 - nitrophenyl linked 3 , 3 ' - diindolylmethane
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 4 - nitrophenyl linked 3 , 3 ' - diindolylmethane