5-Chloro-2-hydroxy-2,4,6-cycloheptatrien-1-one

2-Hydroxy-5-chlorocyclohepta-2,4,6-trien-1-one

5-Chloro-2-hydroxy-2,4,6-cycloheptatriene-1-one

2-Hydroxy-5-chloro-2,4,6-cycloheptatriene-1-one