InChI=1S/C20H28N2O11/c1-31-17-11(24)4-2-9(3-5-12(25)22-8-10(23)6-7-21)16(17)32-20-15(28)13(26)14(27)18(33-20)19(29)30/h2-5,10,13-15,18,20,23-24,26-28H,6-8,21H2,1H3,(H,22,25)(H,29,30)