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Four possible diastereomers of 3-ishwarone, (1R,2S,4S,5R,9R,11R)-3-ishwarone (configuration 1, the same stereochemistry proposed by Lago et al. [12]), (1R,2S,4S,5S,9R,11R)-3-ishwarone (configuration 2), (1R,2S,4R,5R,9R,11R)-3-ishwarone (configuration 3) and (1R,2S,4R,5S,9R,11R)-3-ishwarone (configuration 4), respectively.
