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