InChI=1S/C23H34O4/c1-6-8-9-10-15-13-17(24)20-18(14-15)27-22(3,4)16-11-12-23(5,25)21(19(16)20)26-7-2/h13-14,21,24-25H,6-12H2,1-5H3/t21-,23+/m1/s1