InChI=1/C16H14N4O2/c21-15-6-5-14(18-19-15)16(22)20-8-7-13-11(9-20)10-3-1-2-4-12(10)17-13/h1-6,17H,7-9H2,(H,19,21)/f/h19H 1CAF1BA090358F6B