InChI=1S/C24H17N3O2/c1-26-21(15-16-9-3-2-4-10-16)22-25-19-13-7-5-11-17(19)24(29)27(22)20-14-8-6-12-18(20)23(26)28/h2-15H,1H3/b21-15+