InChI=1/C15H13N3O4/c1-10(11-6-8-12(19)9-7-11)16-17-15(20)13-4-2-3-5-14(13)18(21)22/h2-9,19H,1H3,(H,17,20)/b16-10+/f/h17H 2ECC21A3DC4E178A