InChI=1S/C28H42O10/c29-18-13-11-9-7-5-3-1-2-4-6-8-10-12-15-19-16-14-17-20(21(19)26(33)34)37-28-24(32)22(30)23(31)25(38-28)27(35)36/h1,3,14,16-17,22-25,28-32H,2,4-13,15,18H2,(H,33,34)(H,35,36)/b3-1+