InChI=1S/C20H18O17S/c21-6-1-4-9(13(25)11(6)23)10-5(2-7(22)12(24)14(10)26)19(29)36-17-15(27)20(30)35-8(3-34-18(4)28)16(17)37-38(31,32)33/h1-2,8,15-17,20-27,30H,3H2,(H,31,32,33)