InChI=1S/C20H32O5/c1-2-3-8-12-17(21)13-9-6-4-5-7-10-14-18(22)19(23)15-11-16-20(24)25/h4-7,10,14,18-19,22-23H,2-3,8-9,11-13,15-16H2,1H3,(H,24,25)/b6-4-,7-5+,14-10+/t18-,19-/m1/s1