You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[2-(cyclopropanecarbonylamino)imidazo[1,2-a]pyridin-6-yl]-N-(2-oxocyclopentyl)thiophene-2-carboxamide into its molecular formula.
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C21H20N4O3S
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