InChI=1S/C21H21O14S/c22-7-16-17(26)18(27)19(28)21(34-16)33-15-6-10-12(25)4-9(23)5-13(10)32-20(15)8-1-2-11(24)14(3-8)35-36(29,30)31/h1-6,16-19,21-28H,7H2,(H,29,30,31)