InChI=1S/C21H36O5/c1-2-3-11-14-19(24)15-12-9-7-5-4-6-8-10-13-16-21(25)26-20(17-22)18-23/h7,9,12,15,20,22-23H,2-6,8,10-11,13-14,16-18H2,1H3/b9-7-,15-12+