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 (E)-4-[[(6R)-6-tert-butyl-3-ethoxycarbonyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]amino]-4-oxobut-2-enoic acid using the IUPAC nomenclature.
user
C19H25NO5S
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