InChI=1S/C11H20N2O6/c1-6(2)9(10(15)7(3)11(16)17)12-8(14)5-13(18)19-4/h5-7,9-10,15H,1-4H3,(H,12,14)(H,16,17)/b13-5+/t7-,9+,10+/m0/s1