InChI=1S/C19H15NO8S/c21-19(22)18(28-29(23,24)25)15-11-4-2-1-3-10(11)14-13-9(5-6-20-16(13)15)7-12-17(14)27-8-26-12/h1-4,7,18,20H,5-6,8H2,(H,21,22)(H,23,24,25)