You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-(5-benzylsulfonyl-1,3,4-oxadiazol-2-yl)ethyl]-2-thiophen-2-ylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C17H17N3O4S2
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