InChI=1S/C30H54O4/c1-4-5-6-7-8-9-10-11-12-13-14-17-20-33-29(31)27-18-15-16-19-28(27)30(32)34-26-22-24(2)21-25(3)23-26/h24-28H,4-23H2,1-3H3