InChI=1/C18H13N3O2/c1-11-6-8-12(9-7-11)16(22)14(10-19)17-20-15-5-3-2-4-13(15)18(23)21-17/h2-9,20H,1H3,(H,21,23)/b17-14-/f/h21H B40D722CA83DD2EC