InChI=1/C12H10Cl2O4/c13-9-4-2-7(5-10(9)14)1-3-8(15)6-11(16)12(17)18/h2,4-5H,1,3,6H2,(H,17,18)/p-1/fC12H9Cl2O4/q-1 CAD218F49475FC8B