You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-cyclohexyl-2-[4-[2-(propylamino)-1,3-thiazole-4-carbonyl]piperazin-1-yl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C19H31N5O2S
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