InChI=1/C21H15N3O3/c25-20-18-4-2-1-3-17(18)19(21(26)24-20)13-23-14-5-7-15(8-6-14)27-16-9-11-22-12-10-16/h1-13,23H,(H,24,25,26)/b19-13+/f/h24H FCC8927530E0C43B