InChI=1S/C28H42O9/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-19-17-15-18-20(21(19)26(32)33)36-28-24(31)22(29)23(30)25(37-28)27(34)35/h7-8,15,17-18,22-25,28-31H,2-6,9-14,16H2,1H3,(H,32,33)(H,34,35)/b8-7+