(4aR,5R,6S)-1-oxo-5-vinyl-4,4a,5,6-tetrahydro-1H,3H-pyrano[3,4-c]pyran-6-yl rel-acetate 1H,3H-pyrano[3,4-c]pyran-1-one, 6-(acetyloxy)-5-ethenyl-4,4a,5,6-tetrahydro-, (4aS,5S,6R)- Acetic acid 8-oxo-4-vinyl-4,4a,5,6-tetrahydro-3H,8H-pyrano[3,4-c]pyran-3-yl ester InChI=1/C12H14O5/c1-3-8-9-4-5-15-11(14)10(9)6-16-12(8)17-7(2)13/h3,6,8-9,12H,1,4-5H2,2H3/t8-,9-,12+/m0/s Sweroside aglucone-1-acetate