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