28190
Seven OH - PBDEs were found to bind directly with ER with KD ranging from 1 . 46 x 10 ( - 7 ) M to 7 . 90 x 10 ( - 6 ) M , and the affinity is in the order of 6 - OH - BDE - 047 >= 4 ' - OH - BDE - 049 > 4 ' - OH - BDE - 017 > 6 ' - OH - BDE - 099 >= 5 ' - OH - BDE - 099 > 2 ' - OH - BDE - 007 > 3 ' - OH - BDE - 028 .
 OH - PBDEs, 6 - OH - BDE - 047, 4 ' - OH - BDE - 049, 4 ' - OH - BDE - 017, 6 ' - OH - BDE - 099, 5 ' - OH - BDE - 099, 2 ' - OH - BDE - 007, 3 ' - OH - BDE - 028
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 OH - PBDEs, 6 - OH - BDE - 047, 4 ' - OH - BDE - 049, 4 ' - OH - BDE - 017, 6 ' - OH - BDE - 099, 5 ' - OH - BDE - 099, 2 ' - OH - BDE - 007, 3 ' - OH - BDE - 028