16229
The mechanism by which compound 1 activated Nrf2 signaling was supposed to be a covalent modification of the sulfhydryl groups of Keap1 by an alpha , beta - unsaturated carbonyl group present in the compound 1 .
 Chemical: sulfhydryl; Chemical: alpha , beta - unsaturated carbonyl
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: sulfhydryl; Chemical: alpha , beta - unsaturated carbonyl