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