InChI=1/C21H23ClN2O3/c22-17-8-6-16(7-9-17)21(25)14-20(15-4-2-1-3-5-15)23-18-10-12-19(13-11-18)24(26)27/h6-13,15,20,23H,1-5,14H2/t20-/m1/s1 EA4A4F5F46703362