InChI=1S/C22H26N2O9/c1-7-8-5-4-6-9(25)11(8)16(26)12-10(7)17(27)14-15(24(2,3)33)18(28)13(21(23)31)20(30)22(14,32)19(12)29/h4-7,10,13-15,17-18,25,27-29,32H,1-3H3,(H2,23,31)/t7?,10?,13?,14?,15?,17?,18?,22-/m0/s1