InChI=1S/C11H17N5O4/c12-7(11(19)20)1-2-9(17)16-10(18)8(13)3-6-4-14-5-15-6/h4-5,7-8H,1-3,12-13H2,(H,14,15)(H,19,20)(H,16,17,18)