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