InChI=1S/C12H16N4O7/c1-4-11(22)16(2-5(18)8(20)6(19)3-17)9-7(13-4)10(21)15-12(23)14-9/h5-6,8,17-20,22H,2-3H2,1H3,(H,15,21,23)/t5-,6+,8-/m0/s1