InChI=1S/C17H17N5O4/c18-13(6-11-7-19-9-20-11)16-21-14(17(26)22(16)8-15(24)25)5-10-1-3-12(23)4-2-10/h1-5,7,9,13,26H,6,8,18H2,(H,19,20)(H,24,25)/p-1/t13-/m0/s1