InChI=1S/C11H16N4O5/c12-7(1-2-9(16)17)10(18)15-8(11(19)20)3-6-4-13-5-14-6/h4-5,7-8H,1-3,12H2,(H,13,14)(H,15,18)(H,16,17)(H,19,20)/t7-,8-/m0/s1