7178
For squalene which contains 6 double bonds , gamma ( NO ( 3 ) ) was found to be a function of degree of oxidation with an initial value of 0 . 18 +/- 0 . 03 on fresh particles increasing to 0 . 82 +/- 0 . 11 on average of over 3 NO ( 3 ) reactions per squalene molecule in the aerosol .
 squalene, NO ( 3 ), NO ( 3 ), squalene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 squalene, NO ( 3 ), NO ( 3 ), squalene