InChI=1S/C19H16N8O10S3/c20-17-23-18(21)25-19(24-17)22-11-7-9(38(29,30)31)5-8-6-13(40(35,36)37)15(16(28)14(8)11)27-26-10-3-1-2-4-12(10)39(32,33)34/h1-7,28H,(H,29,30,31)(H,32,33,34)(H,35,36,37)(H5,20,21,22,23,24,25)/b27-26+