2674
The stereospecificity of the majority of the tested enzymes is shifted to the production of an ( + ) - enantiomer of reduced nabumetone ; only AKR1C1 and AKR1C4 produce predominantly an ( - ) - enantiomer .
 Chemical: nabumetone
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: nabumetone 
Answer:
 Chemical: nabumetone