You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as [4-(5-chloro-2-cyclobutylpyridin-3-yl)sulfonylpiperazin-1-yl]-cyclopentylmethanone using the IUPAC nomenclature.
user
C19H26ClN3O3S
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