InChI=1S/C20H23NO10/c22-11-5-7-14(24)21(9-11)13(23)6-4-10-2-1-3-12(8-10)30-20-17(27)15(25)16(26)18(31-20)19(28)29/h1-3,5,7-8,11,15-18,20,22,25-27H,4,6,9H2,(H,28,29)