for the following products
(2S,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic acid | (2S-trans)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic acid | 3S-trans-3-amino-4-methyl-2-oxo-1-azetidine sulfonic acid and (2R,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic acid