InChI=1S/C20H20N6O7/c1-9(27)13(17(29)23-11-7-5-4-6-10(11)19(31)33-3)24-16(28)12-8-21-15-14(22-12)18(30)25-20(32)26(15)2/h4-9,13,27H,1-3H3,(H,23,29)(H,24,28)(H,25,30,32)/t9-,13+/m1/s1