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