26882
Their structures were elucidated by spectroscopic methods including 1D and 2D NMR , HRESIMS , and calculation of electronic circular dichroism ( ECD ) using density functional theory ( DFT ) .
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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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