You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-2-[[5-[(2-chlorophenoxy)methyl]-1,3,4-oxadiazol-2-yl]sulfanyl]-N-cyclopropyl-2-(4-fluorophenyl)acetamide into its molecular formula.
user
C20H17ClFN3O3S
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