You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[6-amino-1-(2-methylpropyl)-2,4-dioxopyrimidin-5-yl]-4-fluoro-N-(3-methoxypropyl)-1-benzothiophene-2-carboxamide .
user
C21H25FN4O4S
assistant