InChI=1/C21H17N3O4S/c1-29(26,27)14-15-6-4-7-16(12-15)20(25)24-18-9-2-3-10-19(18)28-21-17(13-22)8-5-11-23-21/h2-12H,14H2,1H3,(H,24,25)/f/h24H C99AB9E6717C13FD