InChI=1/C18H11ClN2O2/c19-15-7-3-1-5-11(15)13-9-16(21-18(23)14(13)10-20)12-6-2-4-8-17(12)22/h1-9,22H,(H,21,23)/f/h21H 97267A5D3F0DCE23