13108
A new aliphatic enone , ( 17Z , 20Z ) - hexacosa - 17 , 20 - dien - 9 - one ( 3 ) , and one new bisindole alkaloid , gangenoid ( 6 ) , together with seven known compounds were isolated from the roots and aerial parts of Desmodium gangeticum ( family : Leguminosae ) .
 Chemical: ( 17Z , 20Z ) - hexacosa - 17 , 20 - dien - 9 - one; Chemical: bisindole alkaloid; Chemical: gangenoid
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: ( 17Z , 20Z ) - hexacosa - 17 , 20 - dien - 9 - one; Chemical: bisindole alkaloid; Chemical: gangenoid