1(2H)-Pyrimidinecarboxamide, 3,4-dihydro-2,4-dioxo-5-fluoro-N-(4-(trimethylsilyl)butyl)- 1-(4-(Trimethylsilyl)butylcarbamoyl)-5 fluorouracil 122100-47-4 3,4-Dihydro-2,4-dioxo-5-fluoro-N-(4-(trimethylsilyl)butyl)-1(2H)-pyrimidinecarboxamide