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