You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl 5-[(5-oxo-[1,3]thiazolo[3,2-a]pyrimidine-6-carbonyl)amino]-1-benzothiophene-2-carboxylate .
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C18H13N3O4S2
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