InChI=1S/C22H38O13/c1-10(5-4-7-22(2,3)31)6-8-32-20-16(28)14(26)17(11(9-23)33-20)34-21-15(27)12(24)13(25)18(35-21)19(29)30/h4,7,10-18,20-21,23-28,31H,5-6,8-9H2,1-3H3,(H,29,30)/b7-4+