8987
The design and synthesis of a series of substituted 6 - amino - 4 - ( 2 , 4 - dimethoxyphenyl ) - [ 1 , 2 ] dithiolo [ 4 , 3 - b ] pyrrol - 5 - ones are described .
 Chemical: 6 - amino - 4 - ( 2 , 4 - dimethoxyphenyl ) - [ 1 , 2 ] dithiolo [ 4 , 3 - b ] pyrrol - 5 - ones
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: 6 - amino - 4 - ( 2 , 4 - dimethoxyphenyl ) - [ 1 , 2 ] dithiolo [ 4 , 3 - b ] pyrrol - 5 - ones