InChI=1/C18H14F3NO4S/c1-11-6-7-13-12(10-26-15(13)8-11)9-17(23)22-27(24,25)16-5-3-2-4-14(16)18(19,20)21/h2-8,10H,9H2,1H3,(H,22,23)/f/h23H C37CFE83D82C77F9