InChI=1S/C17H19N7O7/c18-11-12(22-16(19)24-14(11)28)23-17(31)20-8-3-1-7(2-4-8)13(27)21-9(15(29)30)5-6-10(25)26/h1-4,9H,5-6,18H2,(H,21,27)(H,25,26)(H,29,30)(H5,19,20,22,23,24,28,31)/t9-/m0/s1