InChI=1/C17H14N2O/c20-17-15-9-5-3-6-10(9)16-14(12(15)8-18-17)11-4-1-2-7-13(11)19-16/h1-2,4,7,19H,3,5-6,8H2,(H,18,20)/f/h18H 8BF7879E7EB9FE72