83851
In medium-sized cycloalkanes , which have between 8 and 11 carbons constituting the ring , transannular strain can be a major source of the overall strain , especially in some conformations , to which there is also contribution from large-angle strain and Pitzer strain .
 Pitzer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pitzer