InChI=1/C18H16ClNO4/c1-2-10-8-11(6-7-14(10)19)24-18(23)13-9-12-15(20-17(13)22)4-3-5-16(12)21/h6-9H,2-5H2,1H3,(H,20,22)/f/h20H 47AAEEF885C9D528