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