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