InChI=1S/C30H58O2/c1-3-5-7-9-11-13-15-16-17-18-19-20-22-24-26-28-30(31)32-29-27-25-23-21-14-12-10-8-6-4-2/h16-17H,3-15,18-29H2,1-2H3/b17-16+