InChI=1S/C21H21ClO10S/c1-9(2)4-5-11-10(3)19-15(6-14(11)24)31-20-13(8-30-33(27,28)29)18(25)17(22)12(7-23)16(20)21(26)32-19/h4,6,23-25H,5,7-8H2,1-3H3,(H,27,28,29)