(1R,2R,3S,6R)-5-benzenesulfonyl-2-methyl-7-oxa-bicyclo[4.1.0]hept-4-en-3-ol

(1S,2R,3R,6R)-5-benzenesulfonyl-2,6-dimethylcyclohex-4-ene-1,3-diol

(1S,2S,3S,6R)-5-benzenesulfonyl-2,6-dimethyl-cyclohex-4-ene-1,3-diol