InChI=1/C14H9N3O4/c18-11-3-1-2-10-12(11)15-13(16-14(10)19)8-4-6-9(7-5-8)17(20)21/h1-7,18H,(H,15,16,19)/p-1/fC14H8N3O4/h18h,15H/q-1 CD7FB33FE82251B9