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