InChI=1/C13H17ClN2O4/c1-9(13(19)20)8-16(7-3-5-11(17)18)10-4-2-6-15-12(10)14/h2,4,6,9H,3,5,7-8H2,1H3,(H,17,18)(H,19,20)/p-2/t9-/m1/s1/fC13H15ClN2O4/q-2 49553FBBA842F555