InChI=1S/C9H16N2O8/c1-18-8(17)11-9(7(10)16)6(15)5(14)4(13)3(2-12)19-9/h3-6,12-15H,2H2,1H3,(H2,10,16)(H,11,17)/t3-,4-,5+,6-,9+/m1/s1