Synonyms: Cyclopenta[c]pyran-4-carboxylicacid, 1-(b-D-glucopyranosyloxy)-6-[[3-(b-D-glucopyranosyloxy)-2-hydroxybenzoyl]oxy]-1,4a,5,6,7,7a-hexahydro-7-methyl-,2-[3-ethenyl-2-(b-D-glucopyranosyloxy)-3,4-dihydro-5-(methoxycarbonyl)-2H-pyran-4-yl]ethylester, [1S-[1a,4(2R*,3S*,4R*),4aa,6a,7a,7aa]]-; Gentiournoside B