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/h3,7,9,11-12,15,19-20,22-24H,2,4-6,8,10,13-14,16-18H2,1H3/b9-7+,11-3+,15-12+