You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-[(7R)-5-(furan-2-ylmethyl)-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-7-yl]ethyl]-1,3-thiazole-4-carboxamide into its molecular formula.
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C17H19N5O2S
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