12702
Population equilibrium in this long sequence is expected to be intricate and beyond the resolution of ensemble - average techniques , such as circular dichroism , NMR , or X - ray crystallography .
 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