InChI=1S/C30H30O9/c1-2-22(18-9-5-3-6-10-18)24(19-11-7-4-8-12-19)20-13-15-21(16-14-20)37-17-23(31)38-30-27(34)25(32)26(33)28(39-30)29(35)36/h3-16,25-28,30,32-34H,2,17H2,1H3,(H,35,36)/b24-22+