InChI=1S/C21H18ClNO3/c22-14-8-5-12(6-9-14)11-17-20(24)18(21(25)26)16-10-7-13-3-1-2-4-15(13)19(16)23-17/h5-10,24H,1-4,11H2,(H,25,26)