2-Phenyl-4-(4-fluorobenzylidene)oxazole-5(4H)-one

2-Phenyl-4-(4-fluorobenzylidene)-2-oxazoline-5-one

4-[(4-fluorophenyl)methylene]-2-phenyloxazol-5(4H)-one

4-[(4-Fluorophenyl)methylene]-2-phenyl-2-oxazolin-5-one