InChI=1S/C17H12N2O8S/c20-8-1-3-12-10(5-8)11-6-13(17(21)22)19-16(15(11)18-12)14-4-2-9(27-14)7-26-28(23,24)25/h1-6,18,20H,7H2,(H,21,22)(H,23,24,25)