InChI=1S/C20H32O6/c21-17(11-6-2-1-3-9-15-19(23)24)12-7-4-5-8-13-18(22)14-10-16-20(25)26/h2,4-6,8,13,17-18,21-22H,1,3,7,9-12,14-16H2,(H,23,24)(H,25,26)/b5-4+,6-2-,13-8-/t17-,18-/m0/s1