InChI=1S/C9H14N2O7/c1-4(13)10-6(3-12)8(16)11-5(9(17)18)2-7(14)15/h5-6,12H,2-3H2,1H3,(H,10,13)(H,11,16)(H,14,15)(H,17,18)/t5-,6-/m0/s1