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