trans-rhaponticin(2S,3R,4S,5S,6R)-2-{3-hydroxy-5-[(E)-2-(3-hydroxy-4-methoxyphenyl)ethenyl]phenoxy}-6-(hydroxymethyl)oxane-3,4,5-triol(2S,3R,4S,5S,6R)-2-{3-hydroxy-5-[(E)-2-(3-hydroxy-4-methoxyphenyl)ethenyl]phenoxy}-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol(E)-rhaponticinponticinrhaponticinrhaponticinerhapontin