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