InChI=1/C15H11N3O4/c19-15(9-1-3-11-12(7-9)18-22-17-11)16-10-2-4-13-14(8-10)21-6-5-20-13/h1-4,7-8H,5-6H2,(H,16,19)/f/h16H 746F47DE803D131F