InChI=1S/C29H46O2/c1-19(2)8-7-9-20(3)22-11-12-23-21-10-13-25-28(5,24(21)14-16-27(22,23)4)17-15-26(31)29(25,6)18-30/h8,18,20,22-23,25-26,31H,7,9-17H2,1-6H3/t20-,22-,23+,25-,26+,27-,28-,29?/m1/s1