InChI=1S/C30H34O9/c1-20(19-39-29(36)15-10-21-8-11-24(32)12-9-21)4-2-5-22(18-31)6-3-7-23(30(37)38)16-28(35)26-17-25(33)13-14-27(26)34/h4,8-17,22,31-34H,2-3,5-7,18-19H2,1H3,(H,37,38)/b15-10+,20-4+,23-16-/t22-/m0/s1