InChI=1S/C21H24ClNO/c1-23-18-11-12-19(23)14-20(13-18)24-21(15-5-3-2-4-6-15)16-7-9-17(22)10-8-16/h2-10,18-21H,11-14H2,1H3/t18-,19+,20?,21?