6128
For the most promising stereoisomer ( S ) - 16 , X - ray and calorimetric studies in PPAR gamma revealed , at high ligand concentration , the presence of two molecules simultaneously bound to the receptor .
 None
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:  
Answer:
 None