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