InChI=1S/C20H23NO12/c1-32-20(31)9(7-8-5-3-2-4-6-8)21-17(26)11(22)10(18(27)28)15-13(24)12(23)14(25)16(33-15)19(29)30/h2-6,9-10,12-16,23-25H,7H2,1H3,(H,21,26)(H,27,28)(H,29,30)