InChI=1S/C19H24N2O8/c1-19(27)16-10(5-6-21(19)2)9-4-3-8(7-11(9)20-16)28-18-14(24)12(22)13(23)15(29-18)17(25)26/h3-4,7,12-15,18,20,22-24,27H,5-6H2,1-2H3,(H,25,26)