InChI=1S/C30H46O4/c1-18(9-8-10-19(2)26(33)34)22-17-25(32)30(7)21-11-12-23-27(3,4)24(31)14-15-28(23,5)20(21)13-16-29(22,30)6/h10-11,13,18,22-25,31-32H,8-9,12,14-17H2,1-7H3,(H,33,34)/b19-10+