InChI=1S/C20H32O4/c1-2-18(21)19(22)16-14-12-10-8-6-4-3-5-7-9-11-13-15-17-20(23)24/h3,5-6,8-9,11-12,14,18-19,21-22H,2,4,7,10,13,15-17H2,1H3,(H,23,24)/b5-3-,8-6-,11-9-,14-12-