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 2-[[5-[(3R)-3-aminopiperidin-1-yl]-7-oxo-[1,3]thiazolo[5,4-d]pyrimidin-6-yl]methyl]-4-fluorobenzonitrile .
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C18H17FN6OS
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