24693
However , our calculations , which take into account different ice surface models , suggest that there is another product with a higher formation probability ( ( 3 . 00 +/- 0 . 07 ) x 10 ( - 2 ) ) , which is the HOCO complex , whereas the formation of CO2 has a probability of only ( 3 . 6 +/- 0 . 7 ) x 10 ( - 4 ) .
 HOCO, CO2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 HOCO, CO2