InChI=1S/C20H34O4/c1-2-3-13-16-19(24-23)17-14-11-9-7-5-4-6-8-10-12-15-18-20(21)22/h4-5,9,11,14,17,19,23H,2-3,6-8,10,12-13,15-16,18H2,1H3,(H,21,22)/p-1/b5-4-,11-9-,17-14+/t19-/m0/s1