InChI=1/C21H20N4O6/c1-11-17(18(24-21(30)23-11)15-8-7-14(26)9-16(15)27)19(28)25-22-10-12-3-5-13(6-4-12)20(29)31-2/h3-10,18,26-27H,1-2H3,(H,25,28)(H2,23,24,30)/b22-10+/t18-/m0/s1/f/h23-25H 1D045F0EB02BB43F