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