InChI=1S/C20H31O4/c1-2-3-4-5-6-7-8-10-13-16-19(24-23)17-14-11-9-12-15-18-20(21)22/h6-7,9-11,13-14,17,19H,2-5,8,12,15-16,18H2,1H3,(H,21,22)/b7-6-,11-9-,13-10-,17-14+