InChI=1S/C20H14N4O10S2/c21-10-1-3-12-9(5-10)6-17(36(32,33)34)19(20(12)26)23-22-18-13-4-2-11(24(27)28)7-14(13)16(8-15(18)25)35(29,30)31/h1-8,23,26H,21H2,(H,29,30,31)(H,32,33,34)/b22-18-