InChI=1/C14H11N3O4/c18-11-5-6-16(14(21)15-11)7-8-17-12(19)9-3-1-2-4-10(9)13(17)20/h1-6H,7-8H2,(H,15,18,21)/f/h15H 8F6A6403A50AC99F