You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopentyl-3-[5,6-dichloro-1-[[4-(methylsulfonylcarbamoyl)phenyl]methyl]benzimidazol-2-yl]piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H31Cl2N5O4S
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