InChI=1S/C21H19ClO10S/c1-9(2)4-5-11-10(3)19-15(6-14(11)24)31-20-12(7-23)18(25)17(22)13(8-30-33(27,28)29)16(20)21(26)32-19/h4,6-7,24-25H,5,8H2,1-3H3,(H,27,28,29)