InChI=1S/C40H52O2/c1-29(17-13-19-31(3)21-23-37-33(5)25-35(41)27-39(37,7)8)15-11-12-16-30(2)18-14-20-32(4)22-24-38-34(6)26-36(42)28-40(38,9)10/h11-26,37-38H,27-28H2,1-10H3/b12-11+,17-13+,18-14+,23-21-,24-22+,29-15-,30-16+,31-19+,32-20-