You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[2-(benzenesulfonyl)ethyl]-N-[(2R)-1-(furan-2-yl)propan-2-yl]-1,2,4-oxadiazole-5-carboxamide into molecular formula.
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C18H19N3O5S
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