InChI=1S/C19H26N2O10/c20-7-11(22)12(23)8-21-13(24)6-3-9-1-4-10(5-2-9)30-19-16(27)14(25)15(26)17(31-19)18(28)29/h1-6,11-12,14-17,19,22-23,25-27H,7-8,20H2,(H,21,24)(H,28,29)/b6-3+