InChI=1S/C20H34O4/c1-2-3-12-15-18(21)19(22)16-13-10-8-6-4-5-7-9-11-14-17-20(23)24/h5,7,9,11,14,17-19,21-22H,2-4,6,8,10,12-13,15-16H2,1H3,(H,23,24)