You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl (6R)-2-[[2-[4-(ethylamino)-3-nitrobenzoyl]oxyacetyl]amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate into its molecular formula.
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C23H27N3O7S
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