15224
Of marsupials and men : " Backdoor " dihydrotestosterone synthesis in male sexual differentiation .
 Chemical: dihydrotestosterone
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: dihydrotestosterone 
Answer:
 Chemical: dihydrotestosterone