InChI=1S/C18H23ClN2O2/c1-12-15(19)8-5-9-16(12)20-18(23)13-10-17(22)21(11-13)14-6-3-2-4-7-14/h5,8-9,13-14H,2-4,6-7,10-11H2,1H3,(H,20,23)/t13-/m0/s1