InChI=1/C19H16N2O/c20-12-13-4-3-5-14(10-13)15-6-7-17-16(11-15)19(18(22)21-17)8-1-2-9-19/h3-7,10-11H,1-2,8-9H2,(H,21,22)/f/h21H E2F78FBCD5295A88