You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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ethyl 2-[3-(2-chlorothieno[3,2-d]pyrimidin-4-yl)-3-azabicyclo[3.1.1]heptan-6-yl]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H18ClN3O2S
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