21364
The three - step transport process is found to be downhill with relative free energies of - 11 . 7 for the first step , - 14 . 8 for the second step , and - 17 . 1 kcal / mol for the third step .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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