InChI=1S/C21H20O13S/c1-31-15-6-11(24)16-10(23)5-13(8-2-3-9(22)14(4-8)34-35(28,29)30)33-20(16)17(15)21-19(27)18(26)12(25)7-32-21/h2-6,12,18-19,21-22,24-27H,7H2,1H3,(H,28,29,30)