You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4,5-dimethyl-2-[4-(3-methylpiperidin-1-yl)sulfonyl-2-nitrophenyl]sulfanyl-1,3-oxazole by IUPAC nomenclature, provide its molecular formula.
user
C17H21N3O5S2
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