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 2-(3-ethyl-2,4-dioxothieno[3,2-d]pyrimidin-1-yl)-N-[[(2S)-oxolan-2-yl]methyl]acetamide .
user
C15H19N3O4S
assistant