InChI=1S/C19H16ClNO3/c20-16-9-17-14(15(10-21-17)18(22)23)8-13(16)11-2-4-12(5-3-11)19(24)6-1-7-19/h2-5,8-10,21,24H,1,6-7H2,(H,22,23)