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