1 MZB (1r,2r,3r,4s,5r)-4-amino-5-[(R)-methylsulfinyl]cyclopentane-1,2,3-triol 1.000 2 MSN (1r,2r,3r,4s,5r)-4-amino-5-(methylthio)cyclopentane-1,2,3-triol 0.917 3 YHO (1s,2s,3r,4r)-4-aminocyclopentane-1,2,3-triol 0.750