InChI=1S/C19H26N2O10/c20-6-5-10(22)8-21-13(24)4-2-9-1-3-11(7-12(9)23)30-19-16(27)14(25)15(26)17(31-19)18(28)29/h1-4,7,10,14-17,19,22-23,25-27H,5-6,8,20H2,(H,21,24)(H,28,29)/b4-2+