Synonyms: 2H-Pyran-4-aceticacid, 2-(b-D-glucopyranosyloxy)-3-[2-[[[2-(b-D-glucopyranosyloxy)-3,4-dihydro-3-(2-hydroxyethylidene)-5-(methoxycarbonyl)-2H-pyran-4-yl]acetyl]oxy]ethylidene]-3,4-dihydro-5-(methoxycarbonyl)-,2-[2-(b-D-glucopyranosyloxy)-4-[2-[2-(4-hydroxyphenyl)ethoxy]-2-oxoethyl]-5-(methoxycarbonyl)-2H-pyran-3(4H)-ylidene]ethylester, [2S-[2a,3E[2R*,3E(2R*,3E,4R*),4R*],4b]]-; Jasamplexoside B