InChI=1S/C22H24N2O9/c1-7-8-5-4-6-9(25)10(8)17(28)21(32)12(7)16(27)13-14(24(2)3)15(26)11(19(23)30)18(29)22(13,33)20(21)31/h4-6,11-14,16,20,25,27,31-33H,1H2,2-3H3,(H2,23,30)/t11?,12?,13?,14?,16?,20?,21?,22-/m1/s1