23768
A monohydroxy - tetrabrominated and a dihydroxy - tetrabrominated metabolite remain unidentified .
 Chemical: monohydroxy; Chemical: dihydroxy
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: monohydroxy; Chemical: dihydroxy