InChI=1S/C20H30O9S/c21-13-7-3-4-8-15(29-30(26,27)28)11-12-17-16(18(22)14-19(17)23)9-5-1-2-6-10-20(24)25/h1,5,11-13,15-17,19,23H,2-4,6-10,14H2,(H,24,25)(H,26,27,28)/b5-1-,12-11+