Synonyms: Sweroside (8CI);1H,3H-Pyrano[3,4-c]pyran-1-one,5-ethenyl-6-(b-D-glucopyranosyloxy)-4,4a,5,6-tetrahydro-,(4aS,5R,6S)-;(4aS,5R,6S)-5-Ethenyl-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,4a,5,6-tetrahydro-3H-pyrano[3,4-c]pyran-1-one;