InChI=1S/C26H46O8/c1-2-3-4-5-6-8-11-14-17-20(18-15-12-9-7-10-13-16-19-27)33-26-23(30)21(28)22(29)24(34-26)25(31)32/h14,17,19-24,26,28-30H,2-13,15-16,18H2,1H3,(H,31,32)/b17-14+