You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-3-deuterio-3-(2,2,3,3,4,4,5,5-octadeuteriocyclopentyl)-3-[4-(2,5,6-trideuterio-3H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]propanenitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H18N6
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