label: Urea, N-(2-chloroethyl)-N'-(2-(5-fluoro-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-2-(methylthio)ethyl)-N-nitroso-
label_lc: urea, n-(2-chloroethyl)-n'-(2-(5-fluoro-3,4-dihydro-2,4-dioxo-1(2h)-pyrimidinyl)-2-(methylthio)ethyl)-n-nitroso-