InChI=1S/C14H19FN2O5S/c1-9-8-11(2-3-12(9)15)23(20,21)17-13(14(18)16-19)10-4-6-22-7-5-10/h2-3,8,10,13,17,19H,4-7H2,1H3,(H,16,18)/t13-/m1/s1