InChI=1S/C16H18N6O5/c23-5-10-12(25)13(26)16(27-10)22-7-21-11-14(19-6-20-15(11)22)18-3-8-1-2-9(24)4-17-8/h1-2,4,6-7,10,12-13,16,23-26H,3,5H2,(H,18,19,20)