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 2-[2,4-dioxo-3-(2-thiophen-2-ylethyl)thieno[3,2-d]pyrimidin-1-yl]-N-(oxolan-2-ylmethyl)acetamide using the IUPAC nomenclature.
user
C19H21N3O4S2
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