InChI=1S/C40H54O4/c1-28(17-13-18-30(3)21-22-35-32(5)23-33(41)25-38(35,6)7)15-11-12-16-29(2)19-14-20-31(4)36(43)24-37(44)40(10)27-34(42)26-39(40,8)9/h11-20,24,33-34,41-43H,23,25-27H2,1-10H3/b12-11+,17-13+,19-14+,28-15+,29-16+,30-18+,31-20+,36-24-