InChI=1S/C21H20O15S/c22-6-13-15(25)17(27)19(29)21(35-13)34-10-2-1-7(3-11(10)36-37(30,31)32)20-18(28)16(26)14-9(24)4-8(23)5-12(14)33-20/h1-5,13,15,17,19,21-25,27-29H,6H2,(H,30,31,32)