InChI=1/C16H11N6/c17-9-19-11-21-15-5-1-13(2-6-15)14-3-7-16(8-4-14)22-12-20-10-18/h1-8,11-12H,(H-,19,20,21,22)/q-1/f/h21H 81FBD84E420360A9