InChI=1S/C20H27NO17/c1-4(23)21-8-14(9(25)7(3-22)34-18(8)33)37-20-13(5(24)2-6(35-20)16(29)30)36-19-12(28)10(26)11(27)15(38-19)17(31)32/h2,7-15,18-20,22,25-28,33H,3H2,1H3,(H,21,23)(H,29,30)(H,31,32)