28382
One potential mechanism for its activity is the covalent modification of cellular proteins , via a reactive alpha , beta - unsaturated carbonyl group in its cyclopentenone ring , which in turn alters protein function .
 Chemical: alpha , beta - unsaturated carbonyl; Chemical: cyclopentenone
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: alpha , beta - unsaturated carbonyl; Chemical: cyclopentenone