InChI=1S/C20H32O4/c1-2-3-4-5-9-12-15-18(21)19(22)16-13-10-7-6-8-11-14-17-20(23)24/h3-4,6,8-10,12-13,18-19,21-22H,2,5,7,11,14-17H2,1H3,(H,23,24)