InChI=1/C13H15ClN2O4/c14-5-4-12(17)16-13(18)15-9-2-3-10-11(8-9)20-7-1-6-19-10/h2-3,8H,1,4-7H2,(H2,15,16,17,18)/f/h15-16H D5578C8DC0A65D85