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