InChI=1/C21H19N3O2S/c1-15(2)20-4-3-5-21(23-20)24-27(25,26)19-12-10-18(11-13-19)17-8-6-16(14-22)7-9-17/h3-13,15H,1-2H3,(H,23,24)/f/h23H 3B66AD05D2C3FDC7