InChI=1S/C20H23NO10/c22-10-12(30-20-17(27)15(25)16(26)18(31-20)19(28)29)7-9-14(24)21-13(23)8-6-11-4-2-1-3-5-11/h1-5,7,9-10,12,15-18,20,25-27H,6,8H2,(H,28,29)(H,21,23,24)/b9-7+