You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(8-chloro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxamide .
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C19H19ClN4O
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