You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3S)-N-(1,3-benzothiazol-2-ylmethyl)-6-oxo-1-(pyridin-2-ylmethyl)piperidine-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C20H20N4O2S
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