InChI=1S/C42H58O4/c1-11-41(9,23-15-21-31(7)19-13-17-29(3)4)33-25-35(39(45)37(43)27-33)36-26-34(28-38(44)40(36)46)42(10,12-2)24-16-22-32(8)20-14-18-30(5)6/h11-12,17-18,21-22,25-28,43-46H,1-2,13-16,19-20,23-24H2,3-10H3/b31-21-,32-22+