You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-amino-5-[2-(4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetyl]-1,3-dimethylpyrimidine-2,4-dione .
user
C17H22N4O3S
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