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