atpenin A4

(2S,4S,5S)-5-Chloro-1-(2,4-dihydroxy-5,6-dimethoxypyridin-3-yl)-2,4-dimethyl-1-hexanone

(2S,4S,5S)-1-(2,4-Dihydroxy-5,6-dimethoxy-3-pyridinyl)-2,4-dimethyl-5-chloro-1-hexanone