22021
The molecular docking of compounds 1 - 4 to ligand binding site of nuclear receptor LXR beta revealed significant differences due to stereochemical configuration of 4 ' atom and structure of 4 ' - substituent .
 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