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