Clotioxone

5-phenyl-3-(trichloromethylthio)-1,3,4-oxadiazol-2-one

5-phenyl-3-(trichloromethylsulfanyl)-1,3,4-oxadiazol-2-one

2-Phenyl-4-[(trichloromethyl)thio]-1,3,4-oxadiazol-5(4H)-one