InChI=1S/C21H20O14S/c22-6-14-17(26)19(28)20(29)21(34-14)16-10(25)5-13-15(18(16)27)9(24)4-11(33-13)7-1-2-8(23)12(3-7)35-36(30,31)32/h1-5,14,17,19-23,25-29H,6H2,(H,30,31,32)