InChI=1/C19H14Cl4O3/c20-11-6-15(10-1-4-16(21)18(23)5-10)14(17(22)7-11)3-2-13-8-12(24)9-19(25)26-13/h1-7,12-13,24H,8-9H2/b3-2+/t12-,13-/m1/s1 1F4E0EEC292F5D94