InChI=1S/C22H22N2O9/c1-7-8-5-4-6-9(25)10(8)15(26)13-19(30)22(33)12(18(29)21(7,13)32)14(24(2)3)16(27)11(17(22)28)20(23)31/h4-6,11-14,18,25,29,32-33H,1H2,2-3H3,(H2,23,31)/t11?,12?,13?,14?,18?,21?,22-/m1/s1