InChI=1S/C20H26NO11/c1-21(4-3-9-5-11-17(31-8-30-11)16(28-2)10(9)6-21)12(22)7-29-20-15(25)13(23)14(24)18(32-20)19(26)27/h5,13-15,18,20,23-25H,3-4,6-8H2,1-2H3,(H,26,27)