InChI=1S/C30H58O4/c1-27(2)21-15-9-7-13-19-25-33-29(31)23-17-11-5-6-12-18-24-30(32)34-26-20-14-8-10-16-22-28(3)4/h27-28H,5-26H2,1-4H3