4H-Cyclopenta[c]thiophen-4-one, 1,3,5-tribromo- 5,6-dihydro-6-[(trifluoroacetyl)amino]-, trans- Acetamide, N-(1,3,5-tribromo-5,6-dihydro-4-oxo-4H-cyclopenta[c]thiophen-6-yl)-2,2,2-trifluoro-, trans NSC662124