InChI=1/C16H21ClN2O3/c17-12-5-4-6-13(9-12)19-15(20)18-10-14-11-21-16(22-14)7-2-1-3-8-16/h4-6,9,14H,1-3,7-8,10-11H2,(H2,18,19,20)/t14-/m0/s1/f/h18-19H 558CB541629D55EE