InChI=1/C20H17FN2O2S/c1-26(25)18-10-6-14(7-11-18)19(23-17-3-2-12-22-13-17)20(24)15-4-8-16(21)9-5-15/h2-13,19,23H,1H3/t19-,26-/m0/s1 377F67A6FE1F8E9F