26227
Synthetic pathway to 22 , 23 - dioxocholestanic chain derivatives and their usefulness for obtaining brassinosteroid analogues .
 Chemical: 22 , 23 - dioxocholestanic; Chemical: brassinosteroid
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: 22 , 23 - dioxocholestanic; Chemical: brassinosteroid