InChI=1S/C20H29NO17/c1-4(23)21-8-14(9(24)7(3-22)34-18(8)33)37-19-10(25)5(2-6(36-19)16(29)30)35-20-13(28)11(26)12(27)15(38-20)17(31)32/h2,5,7-15,18-20,22,24-28,33H,3H2,1H3,(H,21,23)(H,29,30)(H,31,32)