InChI=1S/C19H21ClN2O2/c20-17-8-6-16(7-9-17)19(15-4-2-1-3-5-15)22-12-10-21(11-13-22)14-18(23)24/h1-9,19H,10-14H2,(H,23,24)/t19-/m1/s1