InChI=1/C19H19FN2O4S/c1-11-14-6-4-5-7-17(14)26-18(11)12(2)21-19(23)22-16-10-13(27(3,24)25)8-9-15(16)20/h4-10,12H,1-3H3,(H2,21,22,23)/t12-/m0/s1/f/h21-22H 946B46F499836F82