InChI=1S/C31H42O2/c1-25(2)15-11-18-28(5)20-13-22-29(6)21-12-19-26(3)16-9-10-17-27(4)23-14-24-30(7)31(32)33-8/h9-10,12-17,19-24H,11,18H2,1-8H3/b10-9+,19-12+,22-13+,23-14+,26-16+,27-17+,28-20+,29-21+,30-24+