You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[[5-[3-(2,4-dichlorophenoxy)propyl]-1,3,4-oxadiazol-2-yl]sulfanyl]-N-(3,5-dimethylphenyl)acetamide .
user
C21H21Cl2N3O3S
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