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