InChI=1S/C15H20N2O6/c1-8(2)5-10(13(18)19)16-4-3-9-6-11(14(20)21)17-12(7-9)15(22)23/h3-4,6,8,10,12,17H,5,7H2,1-2H3,(H,18,19)(H,20,21)(H,22,23)/b9-3-,16-4+/t10?,12-/m0/s1