27425
This phase separation occurs , instead of the PE - S rearrangement to core - shell particles , which is hindered due to conformational rigidity of the NPHOS blocks .
 Chemical: NPHOS
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: NPHOS