2(1H)-Pyridinone, 5-chloro-1-(1-(4-chlorobenzoyl)ethenyl)-;2(1H)-pyridinone, 5-chloro-1-[1-(4-chlorobenzoyl)ethenyl]-;5-chloro-1-[3-(4-chlorophenyl)-3-oxoprop-1-en-2-yl]pyridin-2(1H)-one
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