26447
An inverse KIE ( kH / kD = 0 . 87 +/- 0 . 03 ) for the deacylation at C - 6 indicates the involvement of a tetrahedral intermediate in the mechanism .
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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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