You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[2-[4-[4-(difluoromethoxy)phenyl]-4-methyl-2,5-dioxoimidazolidin-1-yl]acetyl]amino]thiophene-3-carboxamide into its molecular formula.
user
C18H16F2N4O5S
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