23595
Both enzyme variants outperformed the wild - type enzyme in the cyanolysis of ethyl ( S ) - 3 , 4 - epoxybutyrate , a conversion yielding ethyl ( R ) - 4 - cyano - 3 - hydroxybutyrate , an important chiral building block for statin synthesis .
 Chemical: ethyl ( S ) - 3 , 4 - epoxybutyrate; Chemical: ethyl ( R ) - 4 - cyano - 3 - hydroxybutyrate
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: ethyl ( S ) - 3 , 4 - epoxybutyrate; Chemical: ethyl ( R ) - 4 - cyano - 3 - hydroxybutyrate