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