InChI=1S/C30H58O3/c31-29-27-25-23-21-19-17-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16-18-20-22-24-26-28-30(32)33/h11,13,31H,1-10,12,14-29H2,(H,32,33)/b13-11+