You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as methyl 2-[(2-benzylsulfanylacetyl)amino]-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate using the IUPAC nomenclature.
user
C20H23NO3S2
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