InChI=1/C16H17ClN2O3/c1-8-7-11(17)5-6-12(8)19-15(20)14-9(2)13(10(3)18-14)16(21)22-4/h5-7,18H,1-4H3,(H,19,20)/f/h19H 964AE56BC0A04A15