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-ethyl-3-[2-oxo-2-[2-oxo-4-(trifluoromethyl)-3,4-dihydro-1H-1,5-benzodiazepin-5-yl]ethyl]thieno[2,3-d]pyrimidin-4-one .
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C20H17F3N4O3S
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