InChI=1/C16H17ClN2O4/c17-12-4-2-1-3-11(12)16(21)19-18-15(20)10-5-6-13-14(9-10)23-8-7-22-13/h5-6,9H,1-4,7-8H2,(H,18,20)(H,19,21)/f/h18-19H 506F976660C5A072