InChI=1S/C26H48O8/c1-2-3-4-11-14-17-20(27)18-15-12-9-7-5-6-8-10-13-16-19-33-26-23(30)21(28)22(29)24(34-26)25(31)32/h15,18,20-24,26-30H,2-14,16-17,19H2,1H3,(H,31,32)/b18-15+