6-(4-Fluorophenyl)-8-phenyl-2,3-dihydro-4<i>H</i>-imidazo[5,1-<i>b</i>][1,3]thiazin-4-one: an unusual [6–5] fused-ring system
Acta crystallographica. Section C, Crystal structure communications/Acta crystallographica. Section C, Crystal structure communications.