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