InChI=1S/C15H14O8S/c16-11-5-1-9(2-6-11)12(17)7-3-10-4-8-13(18)15(14(10)19)23-24(20,21)22/h1-2,4-6,8,16,18-19H,3,7H2,(H,20,21,22)