InChI=1S/C19H26N2O9/c20-9-11(22)7-8-21-13(23)6-3-10-1-4-12(5-2-10)29-19-16(26)14(24)15(25)17(30-19)18(27)28/h1-6,11,14-17,19,22,24-26H,7-9,20H2,(H,21,23)(H,27,28)/b6-3+