InChI=1S/C9H14N2O8/c10-4(7(15)16)3-11-5(12)1-9(19,8(17)18)2-6(13)14/h4,19H,1-3,10H2,(H,11,12)(H,13,14)(H,15,16)(H,17,18)/p-2/t4-,9-/m0/s1