InChI=1/C12H9ClN2O4/c1-6-2-3-7(4-8(6)13)15-10(17)5-9(16)11(14-15)12(18)19/h2-5,16H,1H3,(H,18,19)/p-2/fC12H7ClN2O4/h16h/q-2 E98627AAD4CA14FC