Synonyms: 4H-1-Benzopyran-4-one, 2-[3-[(2E)-3,7-dimethyl-2,6-octadien-1-yl]-2,4-dihydroxyphenyl]-2,3-dihydro-5,7-dihydroxy-, (2S)-, 4H-1-Benzopyran-4-one, 2-[3-(3,7-dimethyl-2,6-octadienyl)-2,4-dihydroxyphenyl]-2,3-dihydro-5,7-dihydroxy-, [S-(E)]-; 4H-1-Benzopyran-4-one, 2-[3-[(2E)-3,7-dimethyl-2,6-octadienyl]-2,4-dihydroxyphenyl]-2,3-dihydro-5,7-dihydroxy-, (2S)- (9CI); (2S)-2-[3-[(2E)-3,7-Dimethyl-2,6-octadien-1-yl]-2,4-dihydroxyphenyl]-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one; Sanggenol ADouble bond geometry as shown., Absolute stereochemistry.