You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(3,4-dichlorophenyl)-4-[[2-[ethylsulfonyl(propyl)amino]acetyl]-[(2-methylphenyl)methyl]amino]piperidine-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C27H36Cl2N4O4S
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